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Pump some iron

The right kind of strength-training can help you feel 10, 20, even 30 years younger, says Bob Greene, trainer and author of 20 Years Younger.

“When done properly, weight-training makes microtears in the muscles, which leads your body to generate thicker, stronger muscle fiber.” Strengthening your muscles in this way leaves you less vulnerable to injuries and builds your stamina.

Greene advises focusing on your lower body and core: Use a set of dumbbells and do a combination of squats, lunges, and calf-raises—two to three sets of 10 reps two to three times a week. It won’t be long before you’ll be giving those 20-year-olds at the gym a run for their money.

Next: Be (a little!) vain