Everyone knows that exercise is good for you. But what they don't tell you is that the wrong kind of exercise doesn't do you any favors.

For 20 years, all I did was lift weights. Although it improved the appearance of my body on the outside, inside, the tight, contracted muscles turned me into a nervous wreck--and not the kind that lies at the bottom of the sea and quivers, like that joke on the Dixie Cup.

Then a friend convinced me to try a yoga class. Thanks to a lifetime of lifting, I was totally blind to the importance of stretching and had no idea just how many areas of my body I didn't have access to.

I couldn't touch here or here or here.

In addition to touching new areas of your body, many yoga stretches will actually manipulate and wring out your internal organs. Which is good for you. My digestion is better, my posture has improved, I'm more relaxed during the day, and at night I sleep like a rock.

And sometimes I sleep like a rock during the day--but that's only if things get really boring.

So work from the inside out and give yoga a try. Your internal organs might even send you a thank you card--once your small intestine figures out how to hold a Sharpie.