Drs. Oz and Roizen : Questions

Gardening as exercise; avoiding illness on a long flight?

Q: I looked at a chart that says gardening is the same as walking 174 steps per minute! I had no idea. If I garden for two hours - and I'm doing that already - am I really doing the equivalent of more than 20,000 steps? - Patsy M., Shaker Heights, Ohio

A: Slow down, Patsy. Going at gardening...