Answer:
Fatigue is temporary loss of strength and energy resulting from hard physical, mental, or nervous exertion (stress).
Step-by-step explanation:
Fatigue is a temporary loss of strength and energy If we lose strength we have mainly done a hard physical activity, however, If we lose energy we have done a very demanding activity for our brain (mental activity), muscles, and nervous system. To not be fatigued anymore the body needs to regain energy and strength by resting and digesting nutrients.