Those kicks are deadly. Sparred with an instructor and my leg was cramped for a WHOLE WEEK and that's with pads. Even with massage therapy or icing, the knots in the thigh don't go away.
They hurt like hell, no doubt about it. Thats why I cant understand why judges discount them, even less than a jab sometimes. Judges should be required to take a leg kick at full speed befor they are allowed to judge an mma match! lol.