Don't have time to spend hours at the gym? No sweat! Small (but regular) amounts of exercise will lift depression, jump-start creativity, and soothe jitters.

Oprah Radio' host Bob Greene talks to Dr. Michael Miller about the benefits that exercise has for the brain.

If you want to boost your mood, strengthen your immune system, sleep better, and look great, Bob Greene has one word for you: exercise. In an excerpt from his new book, The Life You Want: Get Motivated, Lose Weight, and Be Happy, Oprah's trainer helps you scrap the excuses for good.

Re-energize your workday (or a trip to the supermarket!) with these simple, hassle-free exercises--no equipment required.

Oprah Radio host Gayle King talks with Chalene Johnson, creator of the at-home exercise video Turbo Jam.