It pays to pay attention to your hamstrings. Just ask celebrity trainer Ashley Borden. The Los Angeles–based creator of her namesake fitness app, whose clients have included Christina Aguilera, ...

Start in a supine position with your heels resting on a Swiss ball. Bend at the knees and raise your hips as you bring the ball closer to you. Return to the starting position without letting your hips ...

Lie on the ground with your feet resting on top of a stability ball. Your legs should be straight and hands across your chest. This is the starting position. Next, raise your hips and one leg upward ...

It pays to pay attention to your hamstrings. Just ask celebrity trainer Ashley Borden. The Los Angeles-based creator of her namesake fitness app, whose clients have included Christina Aguilera, ...

This exercise strengthens the calves, hamstrings, glutes and spinal erectors (the muscles that stabilize the spine). Step 1: Lie flat on your back with a large exercise ball at your feet. Extend your ...

a) Lie with your calves on a fitness ball, arms by your sides, palms up. Squeeze your bum and raise your hips until your body’s in a straight line. b) Bend knees to roll the ball towards you until ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Nordic curls are a bit of a gymgoer’s party trick. As you lower the backside of your body backwards ...

Runners, bikers, skiers, and swimmers can all benefit from doing exercises that target muscles on the backs of the thighs, since strong hamstrings increase speed and endurance. And that's not all: ...

THE LEG CURL is one of the best machines for building hamstring strength and size. If you don't have one handy, though, what's the next best option? There are two types of hamstring curl machines, and ...

The hamstrings are an important 2-joint muscle that acts at both the hip and knee during running. Since they are a powerful hip extensor, they play a major role in propelling the body forward with ...

Add Yahoo as a preferred source to see more of our stories on Google. The leg curl is an isolation exercise that targets the hamstrings by bending the knee against resistance, says Coates. 'It’s a key ...