I used to stay in shape by playing basketball, and for years I could run up and down the court like a deer. Then I blew out my Achilles tendon at age 40 and decided to give that sport up.I never became a couch potato. Depending on the season, I walked or bicycled vigorously, and regularly, for about 16 years. But it wasn’t enough, and about six months ago I decided to up the ante and take up running.Working on it slowly, I built up to where now I can run two miles with no walk breaks on a consistent
