Washington, inside a private training gym.
A blond, blue-eyed, handsome man was entirely wrapped in a sealed box, with only his head exposed.
He closed his eyes, his complexion pale, his lips very dry, looking as though he hadn't had water in days.
"Hang in there for ten more minutes, and then come out for a rest,"
said a burly black man watching the time, speaking to the man.
He was the man's coach, and the man was Dan Hu, ranked number six in the UFC lightweight division.
At the moment, Dan Hu was dehydrating to cut weight, his entire body immersed in a sealed container filled with reverse osmosis solution, which utilized the principle of osmotic pressure from a high-concentration solution to draw out water, ultimately achieving extensive dehydration of the human body.
The weight of UFC fighters is typically divided into four stages: the first stage is their everyday weight, maintained during injury recovery or regular training, with a more carefree but not excessive diet.