Question

What is one benefit of lifelong physical activity?

Answer 1

prevention of weight gain :)

Answer 2

Th benefits of life long physical activity are too many and penning it down would be a very difficult job. But still there are few highlights which require special mention.
You become healthy internally and externally ie., you look fit and you stay away from illness. This actually makes you look younger than what you are and in turn boosts your self confidence sky high. Due to this you will have great commitment in life and life will be interesting and joyful.