"When I fly, I pack a stress ball—a tennis ball works, too—in my carry-on to help tone my biceps, forearms, and shoulders. Here's how it works: Just grip the ball in your hand and slowly squeeze it 15 times. Then repeat on the other side. I do three sets. The stationary contraction of the muscles—called isometric exercise—cuts down on the swelling and stiffness you feel after long flights. It works on your ankles, too; just put the ball on the ground and roll your foot over it."
—Bob Greene, Oprah's trainer and author of
20 Years Younger