When Your Knee Muscles Feel Like a Muscle Rack

If you’ve ever had to lift a heavy weight or lift a chair at a gym, then you’re probably used to doing so with a pair of crunches.

Your crunched knees are supposed to feel like a muscle rack, but your crunch muscles are actually a bunch of little knobs that connect to your hips.

Here’s what you need to know about knee muscles and their relationship to the crunchers.