If you can jump 2 inches off of the ground and move you hands...then why can't you do double-unders? We answer this through discussion of the 10 General Physical Skills from the October 2020 CF Journal article, "What is Fitness?". We talk about how some of the skills are organic, how others are neurological, and what that means. Training vs practice is covered, as well as why functional movements are challenging, yet essential.