My body reminds me that I am not 20 anymore. If I don't make effort to exercise and stay in shape, I do not stay in shape. Its an on again, off again thing for me. I do really good for awhile, then slack off for awhile.
Starting today, I will do the following, for 30 days:
Run at least every other day.
Exercise daily - situps, chinups, pushups, 20 pound weights.