Bones become porous and fracture easily. Posture becomes stooped. Weight bearing and resistive exercises stress the bones and thus, strengthens them, reducing the risk of osteoporosis. Muscles and joints loose elasticity. Joints tighten and range of motion decreases.
Exercise improves flexibility and range of motion.
Maximum heart rate decreases. Resting heart rate and blood pressure increases. Exercise decreases resting heart rate and blood pressure. Exercise and strength training increases metabolism. The Surgeon General recommends that Americans engage in physical activity for a minimum of 30 minutes 3-5 days a week.