Hi, what could be the cause of a rhythmic, faint buzzing feeling in my right thigh? It seems to be deep near the bone, possibly along the area near the main femoral (?) artery. I am in great health / shape and workout regularly, both cardio and weights. I notice it when I am at rest mostly, the period seems to be a 2-3 second buzz , then a 8-10 second dwell period until the next. What on earth is this???