To Avoid Knee Pain Do: Side-lying Hip Abduction Lie on side, hips and feet stacked and head resting on arm. Raise top leg a few inches. Pulse up and down for 30 seconds. Switch sides. To Avoid Heel Pain Do: Towel Stretch Sit on floor with spine straight, legs extended forward. Wrap towel under balls of feet and hold 1 end in each hand. Flex feet and slowly pull towel closer to torso. Hold 30 seconds. MORE: 9 Walking Workouts That Blast Fat And Beat Boredom To Avoid Hamstring Strains Do: Good-Morning Exercise Stand with feet hip-width apart and arms crossed in front of chest. Hinge at hips, lowering torso until parallel to floor. Engage glutes and back of thighs to slowly return to standing. Do 15 reps. To Avoid: Shin Splints Do: Towel Crunchtoning exercises you can do with a towel Sitting on chair, extend right leg and rest foot flat on hand towel. Scrunch towel between toes 15 seconds, then spread towel out again. Repeat 2 more times, then switch sides. (Check out these other .) Source: Thomas Best, professor of family medicine and sports medicine at Ohio State University