As an athlete, if you want to improve something—your 100-meter time, say, or your deadlift PR—you’ve got to apply a challenge, some sort of “stressor,” and then follow it with a period of rest and recovery. Too much stress without enough rest and you get injury, illness, and burnout.
Source: The Equation That Will Make You Better at Everything – Outside – Pocket
Jogo Corpo Fechado 