Halle Berry Just Posted A Wet T-Shirt Photo Along With Hydration Tips On Instagram

Halle Berry , 53, has worked hard to stay healthy and maintain her fit physique over the years. (While somehow managing to defy the process of aging .) The John Wick actress is generous with fans and loves to share her tried-and-true tips on Instagram.

Halle's latest message is all about hydration. Naturally she paired her water wisdom with a photo of herself pouring water over her face and wearing a sopping wet t-shirt.

Halle said in the caption: "Todays #FitnessFriday is about one of the most important factors of any fitness routine - HYDRATION. We are made of 60% water, and replenishing that amount can have life changing effects on the body - weight loss, higher energy levels, better cardiovascular health, and younger looking skin."

Halle's totally on point herewater intake does have an impact on skin. Ive found that water makes a big difference in skin health, Rachel Nazarian, MD, a board-certified dermatologist at the Schweiger Dermatology Group in New York City and an assistant clinical professor of dermatology at Mount Sinai Hospital, previously told Women's Health . Without adequate water intake, skin appears duller, and wrinkles and pores more prominent.

Halle continued on in her post, issuing a water challenge to her followers: "The crazy part? When youre thirsty, youre already dehydrated - its said that we need upwards of 64 oz. of water a day to stay hydrated and thats NOT including if weve worked out. So I challenge all of us today to drink at least 8 x 8oz. glasses of water a day, EVERYDAY, until next week. Would love to keep track on everyones progress, so let me know how its going in the comments of this post! LETS DO THIS - Happy Fitness Friday!"

FWIW, that eight cups of water daily isn't a universal quota, though. The National Academies of Sciences, Engineering, and Medicine actually recommends 11.5 cups per day for women, although hydration needs vary from person to person. The exact amount of H2O you need is dependent on your size and weight. Some of your total water intake comes from foods like fruits and veggies (an apple, for instance, can provide an entire cup of water).

In general, though, if you take your your weight and divide it by two, that should give you roughly the number of ounces of water you need in a day, Keri Gans , RD, author of The Small Change Diet, previously told Women's Health.

Just remember, pouring water down your shirt a la Halle, won't actually help you hydrate though.