Exercise provides numerous physical, mental, and social benefits. Physically, it strengthens muscles and bones, enhances the immune system, improves cardiovascular and respiratory health, and aids in weight control by balancing calories consumed with calories burned. Mentally, exercise reduces stress, releases endorphins, and improves self-esteem. Socially, it allows people to socialize and develop friendships. The document outlines aerobic and anaerobic exercises and how to calculate target heart rate ranges during workouts.