Not too much: to worry about unless you have pain. It is not especially unusual to hear or feel some popping with flexion/squats usually due to tendons moving over bony aspects of the knee joint. Tightness sometimes indicates a bit of swelling with fluid causing some tension within the joint. I would back off your work out a bit for a week or two. If still having issues, consider Orthopedic/Sports Med eval:)
Answered 1/13/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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