So ive taken a few weeks off and when I started back up I had pains under both knees. I kept running on it thinking it was nothing. soon my muscles above my knees, not sure what their called, but they kept spazing. it felt like they were about to cramp up but didnt at random times. I was walking around a grocery store and they just go on for 5 seconds and go away. 5 minutes later it happens again. any help would be great.
Chris