The 30 Day Water Challenge

Hey guys!

OMG. The wedding is a little over ONE MONTH! Ahhhhhhjkshfksdgkjsdlk!!!!! I can’t believe it’s already almost here after a year of planning and I am SO excited that I’m closer to being able to share everything with you guys! Too. Many. Secrets. Cannot. Contain.


So, for the most part, I’ve been eating well and exercising, but there’s one more thing I truly need to focus on: my skin!

There are a bajillion articles on the internet about how drinking a lot of water will make your skin all soft and glowy. But the real question is… how much is “a lot”?!?! Well, according to WebMD, we should be drinking at least half our weight in fluid ounces of water every single day. So if you’re 150 lbs that means you’ll need to drink at least 75 fl oz of water a day.

Can I do it? Can I drink at least 64 fl oz of water every single day?

Hmmmm well I bet I can if I turn it into an official challenge!!

#30DayWaterChallenge Rules:

#1. Calculate how much water you need to drink by taking your body weight in pounds and dividing it by 2. Whatever number you get is the fluid ounces you’ll need to drink daily.

#2. Take a Before picture of your face on Sept 1.

#3. Print out the “30 Day Water Challenge” printable to help you keep track of your water intake. Post on Instagram or Facebook and encourage your friends to join in! #30daywaterchallenge

#4. Print out the “30 Days of Detox Water” printable for healthy flavored water recipes. Post on Instagram or Facebook and encourage your friends to join in! #30daywaterchallenge#5. Designate a water bottle for the challenge. I highly recommend the Timer Bottle! Drink 2 of these a day and you’re at 64 fl oz exactly!

#6. The #30DayChallenge begins on Sept 1 and ends Sept 30. You will drink at least half your body in fl oz every single day.

#7. Take an After picture on Sept 30. Post your before and after results! #30daywaterchallenge

I want you guys to experience all the amazing benefits of drinking more water.  Did you know it can help with chapped lips, dandruff, feeling tired all the time, AND also digestive health?!  YEAH. Water is amazing.

I’m really excited to be doing this challenge with you! And I’m curious to see what will happen to my skin if I stick to this religiously. If you’re up for the challenge, comment “I’m in” below!!! Now go share this blog post with all your friends so we can get everyone on the 30 Day Water Challenge! C’mon!

253 thoughts on “The 30 Day Water Challenge”

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  1. Amber says:

    I will have to drink 62.2 ounces of water everyday.

  2. Amber Gutierrez says:

    I’m in! I want to see if this will help my eye bags and blemish marks to go away!!

  3. Anna says:

    Is there a way to use this app on computers as well? I would love to use it, but a tiny smartphone screen isn’t doing it for me when trying to work out.

  4. Angie says:

    OMG many congratulações! O wish you a even happier weading. You’re lucky to have so many incredible people in your life (but then you also worked a lot to deserve ir♥️). All the best to you and your people, and please keep blessing us with your amazing work! Cheers 😘

  5. Alex J says:

    I love the water challenge & And i love this site

  6. Lexx26 says:

    I have to drink 127 oz

  7. Tara Russell says:

    20 pounds over weight 😯 not okay

  8. AvaJ says:

    What is everyone doing with the fruit AFTER they’ve infused their water? I’d love some tips on being more efficient with food/waste and money 🙂

  9. AvaJ says:

    I’m curious what other people are doing with the fruit after finishing their water?
    I’m finding a can refill my water and get second bottle of detox/flavoured water, which is great, but then I am throwing the “used” fruit out afterwards. Has anyone tried eating the leftover fruit or using it another way (like in smoothies)? I’d like tips on being more efficient with my money and waste 😀

    1. tatizanoni says:

      I eat it! I also like putting some ginger slices on my bottle

  10. soniarod50 says:

    My water challenge has stars ⭐️ for each 8 fl oz. I drink!

  11. soniarod50 says:

    Love my water with lemon 🍋 and strawberries 🍓 today 👍

  12. Janet Moore says:

    I don’t understand line #1. What
    does ounces mean? Can it be changed it to liters? I very like your challenge.

    1. tatizanoni says:

      one ounce is ~28,3495 milliliters of watter (or gramas)

  13. romualda28 says:

    I’m IN!!!!!

  14. Arissa says:


  15. Elizabeth says:

    I wish your printable had an option to add more waterbottles, as I’m suppose to drink 10, so colouring it in wouldn’t help me get all the water I am suppose too.

  16. jenn says:

    i’m in! printable is hanging in my office, and i’ve got a bottle ready to go. have to drink three/day to make the goal!

  17. Traci says:

    How do I know how much of the ingredients to put my water? Am I doing enough or too much.

  18. Paulina says:

    I love the water challenge!!!!!!

  19. unfitmama says:

    I am not a lover of water but I will def give this a go. Bet I will be peeing all the time. So have to factor in the toilet runs. Nothings beats being out and cannot fine somewhere to pee

  20. Maria says:

    Starting on a Monday at work woop woop #sepchallenge #challengeaccepted

  21. Ratih says:

    hey i want to start this challenge but i’m unsure how to measure how much should i take (water) in a day. Im 90 kg, means I need to drink something around 3 liters a day? Sorry, need a bit of help here

    1. Taylor Carey says:

      You take your weight in lbs divided by 2 and thats the number of ounces you should drink.

    2. tatizanoni says:

      Thats right!

  22. Leafybeefy says:

    yayy im excited im a little late on the fun but im in!

  23. Lew Walls says:

    Challenge accepted

  24. Andrew says:

    I’m In!

  25. Ksenija says:

    A bit late but I’m in love you xx

  26. Rebecca says:

    I’m in!

  27. Marisol says:

    I’m in!

  28. Jaime says:

    I’m in!
    It helps that 1. I already do this because 2. I drink my tea plain (I put a smidgen of milk in my coffee, so not counting that. Plus, the caffeine dehydrates, while my tea is decaffeinated).

    But maybe I’ll work on drinking more plain water throughout the month 🙂

  29. Mary says:

    The only thing im worries about is how much I’ll need to drink.
    Im significantly overweight… And the amount I’ll need to drink is astronomical…. But I’m going to try my hardest

    1. Monica says:

      You can do it Mary. I am overweight myself. I drink 169 ounces of water a day. I get up at 4 for work. I drink (2) 16.9 ounces when I first hit the floor. Then after I shower on the way to work I drink another one. By 7 I have had 3 already. You can do it.

  30. GuiltyJinx says:

    This sounds like so much fun!

  31. stardust says:

    Challenge accepted. 😉

  32. Kathryn says:

    So excited!! 🙂

  33. Lindsey says:

    I’m in- hopefully this will clear up my skin before my wedding! Thanks, Cassey! I’ll be posting about it on instagram @piittoperfectwedding

  34. Wiola says:

    I’m totally in! 😀
    Just a question – does the tea counts? :p

  35. Arlene says:

    I’m In

  36. Martha says:

    I’m in!

  37. Theana says:

    I’m in 🖤

  38. Dima says:

    I’m always in 🙌🏻

  39. Ramya says:

    I’m in 🙂

  40. Sara Imran says:

    I am SO in. Thanx cassey for being so wonderful trainer. Love from pakistan

  41. Emily0202 says:

    I’m in and very very curious to see what its going to do for my skin!!

  42. Arleen says:

    Count me in.

  43. Erika Webb says:

    I am In

  44. Natacha says:

    How much of each ingredient?

  45. Bridget Wolff says:

    I’m in! Love some good water. 🙂

  46. Jenny Vinh says:

    I am totally in, my wedding in on October 5th so I really need clear skin <3

  47. Juli says:

    I’m in!!

  48. Aurora says:

    So I’m really confused about how much water I need to drink 😅 my weight is 68 kg, divided 2 is 34 kg, do I have to drink 34 litres of water?! 😂😂 (anyway I’ve stared this challenge months ago and I can reach 2,5/3 litres of water per day ☺️, I’m not sure about 34!!)

  49. Anna Reppel says:

    I’m in so excited 😆

  50. Anna Reppel says:

    I’m in

  51. Rhonda says:

    I’m in

  52. Sara says:

    I’m in and am really excited : ) Challenges are fun : )

  53. Monica says:

    The water challenge is superb

  54. nettie says:

    I’m in.

  55. nettie says:

    I’m in

  56. Arifah Ezzati Aminuddin says:

    I’m in

  57. Celia says:

    OMG! Can’t wait for your wedding Cassey I’m so happy for you (and so hyped!). I hope you have a wonderful day. Also, the water challenge is great, I’m in!

  58. Anna says:

    i’m in

  59. Laura Dupuis says:

    I’m in!

  60. Pol says:

    I’m in

  61. Rosalyn says:

    I’m in!!!
    This Challenge is just in time!

  62. Sandi says:

    I’m in!

  63. Laurie Mackin says:

    I’m in

  64. I’m in !!! I drink a lot of water already, but didn’t know exactly how much I should be drinking…great info thanks so much!!!

  65. Tharshana says:

    Exactly what I need! I’m so ready for this!

  66. Kiara says:

    I’m in! But I already drink about the right amount of water every day so should I try to drink my whole body waight in a month?? 💙

    1. Lisa says:

      If you already drink enough then you don’t need to do the challenge. There is no benefit in drinking too much water.

    2. Maria says:

      go for it, why not? lol

  67. Rosalynne says:

    I’m in!

  68. Layah says:

    I’m in

  69. Lenj says:

    I’m in. Ready for tom water challenge excited with the result on Sept 30.

  70. Julie Leggett says:

    Looking forward to this challenge (even though it’s still cold in Aust). Will be drinking warm water I think 😊

  71. Kyyra says:

    I’m in!!! 😀 first challenge which I will join

  72. Charlea Mossner says:

    I’m in!

  73. Kimberley says:

    I’m in!

  74. Nouf says:

    Im in, so excited!!

  75. Lena says:

    So in 🙂 I need this 😉

  76. Sovi Gonsalves says:

    I’m game! Let’s do this!

  77. Amrita says:

    I’m in 💪

  78. i am in but i’ll start it after 4th..that means after my bday coz i don’t want to break my challenge n its impossible to starve on your yaayyyeee^_^

    1. Emma says:

      Why are you going to be starving?

    2. Lisa says:

      You’re not supposed to *only* drink water!!

      1. Christy says:

        Are we able to eat food too?

        1. blogilates says:

          YES!!! The water challenge is just to track water intake!

  79. Vanessa says:

    I’m in! I always love a challenge

  80. antonia says:

    im in!

  81. Caitlin says:

    I’m in!

  82. Chloe says:

    I’m in!!! Let’s do this!

  83. TiNa says:

    I’m in 👌💗

  84. Angie says:

    I needed this for the longest time.. I’m in 🖐️

  85. Nana says:

    I AM IN!💜🌱

  86. Nadia says:

    I’m in!

  87. Ro says:

    I am in 👍 Let’s do this 🎉

  88. Yemi says:

    I don’t like water. But when I hear challenge, I am in

  89. Resa says:

    I’m in

  90. Rebekah says:

    I’m in! 💕

  91. Kelsey says:

    Count me in! I drink so much water every day from nursing I hope this will be easy but also make me aware of how much I’m drinking! 🎉

  92. Kirsten says:

    I’m in!!!

  93. Kim says:

    I’m in

  94. Neo says:

    I’m in!!!

  95. klclark says:

    Lets do this 😀

  96. Alison says:

    I’m in, even though that’s a lot of water!

  97. chantelle says:

    I am in

  98. Eugenia says:

    I’m in.

  99. Trixysue says:

    I’m in!!! 🙂

  100. Verity Hibbitts says:

    I have a really hard time drinking water in general (outside of excersize), so this will be quite the challenge for me!

  101. Trixysue says:

    New challenge! 😙

  102. Denise says:

    I’m in

  103. Shelley says:

    I’m in!

  104. Jacey says:

    I’m in! Gonna do this! Can’t wait to see results!

  105. Omnia says:

    I’m in 🙂 !

  106. Tanjina says:

    I am in!! Why have i never thought of this??

  107. Marilu says:

    I am in

  108. Pavleen Bhatia says:

    I’m in! 🙋🏻‍♀️

  109. Cari Jo says:

    Count me in sister!

  110. Lexi says:

    I’m in!

  111. Jamie says:

    I’m In

  112. Christy says:

    I’m in!

  113. Paddy says:

    I’m in!

  114. Jessi says:

    I’m in!

  115. Julia says:

    I’m in!

  116. Christine keeffe says:

    I’m in!

  117. Ellie says:

    I’m in! ^.^

  118. Peaches123 says:

    Count me in Cassey!!

  119. Suzanne says:

    I am in

  120. Jenny says:

    I’m in! But I have a question how much of fruit do we need to add to the water?

  121. Mabe says:

    I’m in! 💪🏻

  122. Jae says:

    I’m in

  123. Elizaberh says:

    I’m in! Just ordered my timer bottle! 😀

  124. tanarchyNow says:

    im in

  125. guardbear says:

    I’m in!!!

  126. Rakel says:

    I’m in…and I’m challenging my sisters too. I drink water already but coffee n cokes can be very tempting but

  127. Aliya says:

    I’m in!!!

  128. Chantelle says:

    I’m in! Keen as!

  129. Mozelle Ramos says:

    Soooo in!!!! Water or detox water? I’m game!!!!

  130. Ramya says:

    I’m in!

  131. Ashley says:

    I’m in!

  132. Daniele says:

    I’m in!

  133. Babbli Shetty says:

    I’m in!! 🙂

  134. IceCat21456 says:

    I’m in!

  135. Angie says:

    This will be awesome! Great idea and tips!

  136. Carolina Quintero says:

    Casey, I can’t download and print the detox water chart. Please help!

  137. Marina90 says:

    I been working on my water drinking, I downloaded an app called Gulp it is a water reminder it also tells you how much to drink based on your weight. I love the reminder alarms to remind me to drink.

  138. NADHRAH MURAD says:


  139. Zethu says:

    Ready to do this

  140. Zainab says:

    I’m in

  141. Kelly Rardon says:

    I’m in!

  142. Priyesha goenka says:

    i am in
    but do we just drink water or we eat some fruits and vegetables?

    1. Lisa says:

      Is this a serious question? Do you really think Cassey would challenge you to survive on just water for a whole month?

  143. Syifa says:

    wohoo! I’m in, so excited!

  144. Alice Mayhew says:

    This is a great idea!!

  145. Alicia says:

    I’m in !! I’m hoping drinking lots of water will help me lose weight

  146. yota says:

    I’ m in!!!

  147. Hellen says:

    Am in but some fruits like raspberry are not available here

  148. I did this 4 years ago and it helped me quit smoking. It was great! I’ve been wanting to do it agin for my health… but been going through too much stress- I was diagnosed with 14 benign brain tumors my husband left me and then my mom died. But at least I didn’t start smoking again! Time for self care and hydrating… maybe I’ll even start my sit-ups again! Thankyou for your inspiration! It is much needed and appreciated.

    1. Monica says:

      I just want to encourage you. You can do this. God is able to do abundantly above all we can ask or think. Trust God he is a healer. Yes by all means start drinking your water again. It helps me mentally. Yes I am doing it for my health also. Dont give up you can do it. I hope this helps.

  149. Gigi Mar says:

    I’m in!!! Bring it

  150. Ang says:

    I’m in

  151. Ashley says:

    I’m in!

  152. Linn says:

    I’m in, but I’m really allergic to sitrus fruits, do you have an alternative ingredient for lemon, lime and orange? I love just regular water though (and cucumber water)

  153. Izzy says:

    I’m in! Does it include coffee & tea?

  154. Maya says:

    I’m in!

  155. Theresa says:

    I’d like to try. Do the fruit need to be infused over night ?

  156. Lore says:

    I’M SOOOOO IN!!! This is MY month I’ve been working out every day for almost a month and I feel the changes in my body and by drinking the correct amount of water will help me to reach my fitness goals. Thank you Cassey!!

  157. Muriel says:

    I’m in! 💧💧💧💧💧💧

  158. Florence says:

    I’m in

  159. 이보배 says:

    Yes, I am in!

  160. Jenavieve says:

    I’m in!!!! I’m going to Australia and I want my skin to be on fleek!!

  161. Michelle says:

    I’m in 🙌💪

  162. Ana says:

    How would it work for the AUS metrics?

  163. Dana says:

    I’m in!

  164. Susan says:

    I’m in too!!

  165. Sandi says:

    I’m in-I have been slacking so looking forward to the challenge!!

  166. Laura Kelbacher says:

    I’m in

  167. Cat says:

    So glad to have communal motivation to drink more water! My wedding is Oct 6th!! Also, so excited for your wedding!!

  168. monarivas says:

    im in. My birthday is the first week of October, I am trying to glowww

  169. Julie says:

    I’m in!

  170. Sue says:

    how much water will it be for 65kg

    1. Thais says:

      2118 ml (converting was a b**** for me too, imperial units make no sense)

  171. Michelle chavira says:

    On day 21 on the detox water chart there is a minor mistake the recipe indicates its kiwi+strawberry+mint but the image shows a cucumber instead of a mint regardless i’m so in for this challenge.

  172. brittanyberry says:

    I’m In

  173. Kim says:

    I’m gonna do this challenge. My first one (Yeah). No more bloated belly

  174. Darya says:

    Yayyy!!! I am doing this challenge because it’s easier but I didn’t do any other challenges so I’m BUSTED lolz!!!:)

  175. Christine says:

    I’m in!

  176. Kuds says:

    Im in. My cousin’s wedding is on october, and I want to attend there with a healthy glowing me. Eeeee!

  177. Tracy turner says:

    I’m in

  178. viperimatye says:

    I will try this. I’m in!

  179. Gladys says:

    I’m in

  180. Gosia says:

    How does that relate to kilograms and litres? Surely it can’t be a half…

    1. Aurhora says:

      Google it! In my case, I weight 130 pounds which is about 59 kilograms. Divide it by half, which means I have to drink at least 65 oz of water. 65 oz is 1,85 litres of water.

  181. Aysenur says:

    Drinking water is one of the biggest struggles I have! It’s just so hard. I tried doing this challange a few times but always failed halfway through. Hopefully this time, it wont be like that! I’m in <3 bring it on!

  182. Marnie says:

    I’m in!

  183. Aurhora says:

    I’m totally in! But I have a question : is tea included in that ? I drink 16 oz of tea every morning (no sugar or milk added, I drink it plain)

    1. I’ve read in the past that as long as you’re drinking your tea plain then you can count it 🙂

      1. Jaime says:

        Thanks, Natalie!

  184. Gauri says:

    I’m definitely in! I know I need more water intake generally and this may just help me stay more accountable and up on it for the month! I love doing challenges with you!

  185. Malin Rosén says:

    I´m in!!!!!!!!!!! Water, here I come!

  186. Krista says:

    I’m in!! I’m so bad at drinking water

  187. Sofia Blanca Giczei says:

    I am in😁💖

  188. Manisha Bhagat says:

    hello cassey…i m in ….some fruits are not available in my country for this season so plzz suggest smthing fr that

    1. Lisa says:

      Just use whatever fruits ARE available in your country, or drink plain water!

  189. Selin says:

    Hi! Im definetely in!! Im a freshman in highschool now and a dancer. I was thinking i should use some gym exercises too, so why not add the water in my life too? Good luck to everyone, lets stay hydrated. – from Turkey

  190. Vivian says:

    I’m in !!! just the motivation I needed

  191. Yumiko says:

    75fl is 2.3L ?! OK! I’m IN !

  192. brygusz says:

    I’m in!! 🙂

  193. Fiona says:

    Hi Cassey, I’m in !!! I don’t think pineapple is in season right now in the country where I live, at least I haven’t seen it in a while, would I be able to use canned pineapples? But then again, they are probably full with added sugar.

  194. Marcie says:

    I am in!!!

  195. Kasey Harding says:

    I’m In!!

  196. SABA says:

    I am in!

  197. Martina says:

    I’m in.

  198. Denisse says:

    I am in 👏🏽🙋🏽‍♀️💖

  199. nicole villareal says:

    I’m in

  200. Himika says:

    I am in!

  201. Rebecca says:

    I’m in!!

  202. Cynthia Nunez says:

    I’m in 😁

  203. Brittany says:

    I’m in!

  204. Hanna C Morrill says:

    I’m in

  205. Jess says:

    Im in!

  206. Emily Chow says:

    I’m soo in! I’m thinking of starting but early since I do need this to help with my skin for my wedding that’s in 26 days! 😱

  207. Maria R says:

    I’m in!

  208. Karla says:

    yess I’m in!!

  209. Larria Carroll says:

    Im in

  210. Melanie says:

    these sheets are sooo cute! is this actually how much we should be drinking??? i’ve been thinking about losing weight forever now, and this guy has a deal on this book. my friend in virginia said it works for her, but i wanna know if you think it looks legit?? thx..

  211. Megan says:

    I’m In! I’ve been working on changing my habits and I’m so excited for this challenge. Hell, why wait until September 1st when you can start tomorrow August 27th.

  212. Cindy says:

    I’m in!!!

  213. Mary says:

    Can’t wait!

  214. Vicki says:

    I’m in

  215. Elayna Newport says:

    I’m in!

  216. Sportacus says:

    ALL IN!

  217. Laura says:

    I’m in

  218. Michelle Mendenhall says:

    I’m in!

  219. JennyShan13 says:

    I’m really excited about this! Can’t wait for the before and after picture. I want to improve my acne and overall health.

  220. Keline Jacquet says:

    Yass, i am sooo in

  221. Charlene Vance says:

    I’m wanted to thank you for being my work out buddy because I really needed one. I’m weighing in at 335lbs and it really hurts my body and some of the exercise I can’t do because of my wrist I had surgery on them.

  222. Jana says:

    I’m in of course! Love drinking water!

  223. Asiyah says:

    i’m in!!!!

  224. DivaExcel says:

    I am sooooo in! Counting down to Sept 1st!!

  225. Drish says:

    I’m in!