STARTING POSITION:
Lie on your back on a mat and extend your arms and legs. Place your right foot flat on the floor. Contracting your left quadriceps, extend your knee as much as you can.
MOVEMENT:
Raise your left leg until it's 45º from the floor. Make sure your leg is extended at all times. Return to the starting postion with a smooth movement. Repeat the movement for the specified amount of repetitions and then switch sides and repeat with the other leg.
TIPS: Make sure you do the exercise without any movement of your body.
