As individuals age, several physical changes occur, including reduced muscle mass and strength, decreased bone density, and changes in body composition (such as increased body fat). Flexibility often declines, impacting mobility and balance. Additionally, there may be changes in metabolism, leading to weight gain. Aging can also affect the body's ability to recover and adapt to physical stress. Maintaining a healthy lifestyle, including regular exercise and balanced nutrition, can help mitigate some of these changes and promote healthy aging.