Want to avoid injury? Take your time when lifting. A new study found that runners became stronger after doing six weeks of eccentric strength training. This tactic, which entails slowing down the lengthening phase of a movement, puts greater stress on muscles to help them grow more powerful and resilient. Do the following five exercises from as one circuit. Rest, then repeat. Aim for three rounds total, trying to take minimal rest between reps and circuits.

Single-Leg Squats

Stand with your left foot on a box, right leg hanging off to the side. Bend your left knee to slowly squat down. Pause, then rise back up to the starting position. Do six to 12 reps on each leg.

Calf Raises

Stand with your heels off a box edge. Lift up on your toes (use a wall for support). Take your left foot off. Lower your right heel slowly. Pause; return to start. Do six to 12 reps on each leg.

Woodchop

Squat down and bring a medicine ball toward your right knee. Contract your abs as you stand up and bring the ball diagonally across your body. Do both phases of the movement slowly so you move with control in both directions. Do six to 12 reps on each side.

Deadlift

Stand with dumbbells. Hinge forward at your hips, keeping your back flat, to lower the dumbbells just below your knees. Rise up slowly to stand straight. Pause, then lower back down and repeat six to 12 times.

Single-Leg Bridge

Lie on your back with knees bent and arms at your sides. Extend your right leg out. Lift your hips slowly into the air. Pause, then return to start. Do six to 12 reps on each leg.

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