For about three weeks have developed having muscle spasms in my lower legs (front side), hamstrings and at times the adductor. This mainly occurs at night after I have been asleep for about two or three hours. Was given a muscle relaxer which I have been taking in the evening before bed. While this occurs mainly in the evening, I have experienced them during the day while sitting. I am active with exercise weekly which includes Hot Yoga (two or three days per week), Heavy Bag (Boxing) conditioning (twice per week) and a general sports class (once or twice per week.