Physical exercise is considered important for maintaining physical fitness including weight building and maintaining healthy bones, muscles, and joints, promoting physiological well-being, reducing surgical risks and strengthening the immune system. While exercising, it is important to have a good diet to ensure that body has the proper ratio of macro-nutrients and micro-nutrients.
This is to aid the body with the recovery process following strenuous exercise because when the body falls short of proper nutrition, it gets into starvation mode and depends onto the fat content for survival. Like exercise, proper rest and recovery is also important for health, otherwise the body exists in a permanently injured state and will not improve or adapt adequately to the exercise.