As we reach our 40s and 60s, the body undergoes significant physiological changes—muscle mass declines, metabolism slows, and cellular repair mechanisms weaken. According to experts, these decades mark a period when aging processes can accelerate, raising the risk of chronic diseases and diminished vitality. However, daily habits play a powerful role in counteracting these effects. Medical professionals emphasize that adopting targeted lifestyle changes can help preserve health and slow aging. For more, see insights from the Mayo Clinic and Harvard Health.