1. Bent-Knee Extension

Targets hamstrings (back of thigh)

Lie face up on floor with arms at sides, knees bent 90 degrees and heels shoulder-width apart on a stability ball. Lift hips toward the ceiling, being careful not to overarch back. Hold for 3 counts and lower. Repeat for 8 to 10 reps.

2. Seated Leg Raise

Targets quads (front of thigh)  

Sit on floor with your back pressed into a wall, legs extended in front of you with feet flexed. Raise right leg off floor as high as you comfortably can, keeping foot flexed. Lower to floor without touching; do 20 continuous reps. Repeat with left leg.

3. Scissor Kick

Targets adductors (inner thigh)

Lie face up on floor with arms at sides, palms down and legs extended. Lift legs about 45 degrees, pointing toes. Quickly open and close your legs, crossing the right thigh over the left and then reversing the movement. Continue scissoring legs; do 12 to 15 reps per side.