My Son Is Driving Me Crazy!!!

Why can't he just SIT DOWN AND BE QUIET?!?!?!?! He has been talking, running, yelling, playing, and jumping for over a week. Yes, I realize that this is natural. I am venting more so than asking a solution. We have a big backyard, and we go to the park and all that but to no avail. He was taking gymnastics and was still jumping around afterwards. Again, I just wanted to vent. Afterall, I am grateful that both my children are able bodied and of sound mind. Some people wish their son could behave like this...I just wanted to vent.