“I was wondering: Are jumping jacks a good form of exercise? If they are, what are they good for and how many should I do at a time?”
They’re pretty good, especially when you’re just starting out. I use them more as a warm up than anything since it really gets my heart pumping. I don’t know exactly what they target though :p You should do as many as you can, some people are about to do 100 at a time, and some people 10, so it all depends on what you know you can do.
