The importance of exercise. For example, in time you want relieve your feeling of stress, do some exercises. Performing exercises causes your body to produce a relaxation response. There is also the point about endorphin release which helps to calm you and can create a natural feeling of euphoria. You will also see improvement to your physical and mental performance when you get regular, quality exercise. Greater strength and stamina will help improve your physical performance. Which People who exercise regularly enjoy a greater degree of clarity, which obviously helps with mental performance. and still forming your fitness habits, this is extremely important.