Hello, I have a persistent - almost violent spasms above my right knee, on the outside of it. I just had a day full of running, and I did not consume anything with sugar, except for fruit in the morning. I drank a lot of water throughout the day. Spasms only started a few hours after I was finished with the physical activity, lat at night. The spasms get worse when I fully extend my leg and is less severe when my knee is bent. I am 19, 5 10, fit and healthy. Should I be worried? Thanks