I just finished reading a treatise on the aging process. Of course, there are disagreements on what causes aging, but there are generally two theories that are advanced by doctors.
The first, and simplest is, like a car, our bodies just wear out from use. The second is each species has DNA genetically programmed to last a finite length of time. Cells stop dividing and the genetic process which keeps us going just stops. Each of these theories represent fascinating research projects, but the fact is we still get older, a bit crankier, our bones get weaker and the recovery time from all activities takes a little longer.
However, there is one thing that every treatise on aging does agree on. Physical activity is important in extending the aging process. I watch a woman in her 80's walk every day. She moves very slowly because she pushes her walker in front of her. I play tennis with people in their late 80's who recognize they cannot hit the ball as hard as they used to, but they can still hit the ball. I always admired a fishing/golf/tennis buddy of mine who is in his early 80's, but looks, acts and moves like he was 10 years younger. I asked him what was his secret? He replied, "I do 15 minutes of Yoga every day." Every article I have every read on aging confirms the importance of daily physical activity.
An apple a day may keep the doctor away, but exercise every day keeps old age at bay.
Walking works. I would write more, but I am scheduled to play tennis.
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