DEAR DOCTOR K: I just turned 40, and I have finally accepted that I need to make regular exercise part of my life. I'm in pretty good physical shape, if slightly overweight. How much exercise do I need to stay healthy and maybe drop a few pounds?
DEAR READER: It's easier than you might think. It also depends on your goals. You've probably heard that regular exercise protects you against many of the major diseases. I'm talking about heart disease, diabetes, osteoporosis, depression and even some cancers. When I tell my patients this, they often get a certain expression on their face that says, "Not this exercise-is-good-for-you stuff again."