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"For me, I'm 28, I've been doing this a long time, so it gets harder, your metabolism slows down a bit as you get older. I have to get out there every day and move—whether it's yoga, taekwondo, whatever—I have to move every day."
—Diana Lopez, taekwondo
Unleash your inner Olympian with these gold medal-worthy fitness tips
Go for the Gold! Workout Secrets from Top Olympic Athletes