Question about Wallsits

Is it ok if my knees hurt right after I'm done doing these? They only hurt for a few seconds, but I don't want to be screwing up my knees. For anyone curious, I do them with my lower legs perpendicular/my thighs parrallel to the ground(when I do them).

you're doing it right and the pain is normal IMO... it's because you're using parts of your knee you don't normally use, and as they get stronger they hurt..

yea that sounds about right,,,just be careful if it's too much pain, or clicking...and try to warm up the knee's a tad first.