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Put your back flat on a wall and bend your knees. Hold it there for as long as possible. Or take a work out ball and lean against it on a wall and bend your knees up and down for however many reps you like.
Put your back flat on a wall and bend your knees. Hold it there for as long as possible. Or take a work out ball and lean against it on a wall and bend your knees up and down for however many reps you like.
that works quads and hamstrings right? ooOOoOO and a little of teh bootay!