Knee joint pain in sleep?

Last night I kept waking up to pain in my left knee–it hurt to bend it.

Odd enough, when I went running today it didn’t hurt at all. However, when I stopped running it hurt to walk regularly.

I don’t understand the cause. Growing pains? I’m 17.

I thought maybe it was because I went bowling (only logical thing I could think of) but that was on Sunday night. (And it’s Wednesday morning now)

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Tags: growing pains, knee joint pain, left knee, Odd, wednesday morning