Who said "You gotta stay in the gym when it's hard."?

This quote is attributed to Will Smith.

You gotta stay in the gym when it's hard. - Will Smith

"You gotta stay in the gym when it's hard."

Will Smith

Actor and Rapper American Born 1968 (age 58)

"Don't chase the money. Chase the passion. The money will follow."

"If you don't fail, you're not even trying."

"Greatness is not this wonderful, esoteric, distant thing that only the gods can touch."

"The only thing that I see that is different about me is that I am not afraid of dying on a treadmill."