Participants in a TikTok fitness trend called 75 Hard are consuming a gallon of water per day as dictated by the popular health program — and now they’re warning others to listen to their bodies.

A TikToker said she had to go to hospital while attempting a fitness challenge called "75 Hard." It requires 75 days of a strict diet, working out twice a day, and drinking a gallon of water. She said ...

TikToker Michelle Fairburn was hospitalized for what her doctor believed was severe sodium deficiency after participating in the 75 Hard challenge, which calls for drinking a gallon of water per day ...