Crab Single Leg Extensions

From sitting, place your hands behind you and your bent knees in front, lifting your hips off the ground to come to a crab position. Take your right leg and bring your knee to your chest, then extend the leg straight out in front of you. Bring the knee back to your chest and repeat without letting your hips sit down. Stay on one leg for the duration of time or reps and then repeat with the left leg.