Time passes and our bodies change. The loss of muscle, bone and fat under the skin, along with changes in collagen and elastin, is making fine lines and wrinkles more dramatic. You may become sensitive to glare, and your night vision may decrease. Aging and inactivity can lead to achy joints because of the wearing down of cartilage, the loss of lubricating joint fluid and weaker muscles. You might stay away from stressful situations, thereby missing out on new opportunities.
You cannot stop the aging process, but you can make choices that improve your ability to maintain an active life, to do the things you enjoy, and to spend time with loved ones.
Source: https://www.bangkokhospital.com/en/content/greatest-of-50