Lying Prone Quadriceps alternatives

7 exercises that train the quads like the Lying Prone Quadriceps does. Different equipment first.

Exercise	Equipment	Also works
One Half Locust	Body only	Abs, Biceps, Chest
Rear Leg Raises	Body only	–
Sit Squats	Body only	Abductors, Glutes, Hamstrings
Frog Hops	Body only	Calves, Glutes, Hamstrings
Kneeling Hip Flexor	Body only	Quads
Looking At Ceiling	Body only	–
Standing Hip Flexors	Body only	–