This document discusses the importance of exercise for physical and mental health. It describes four main types of exercise: endurance, strength, balance, and flexibility. Endurance exercises like cycling and running improve cardiovascular health while strength exercises like weight lifting and eye exercises build muscle. Balance exercises such as Tai Chi and heel-to-toe walking improve posture and coordination. Flexibility exercises including yoga, stretching, and calf raises enhance joint mobility. Regular exercise provides benefits such as increased fitness, better sleep, reduced stress, and prevention of diseases.