Did it in my boxing days, great cardio As far as the joints go, when you get better the jump height becomes lower, thus less stress on them. Being quite tall my knees arent that good, and mine never hurt after the workout. I did however get an injury that some might not know about skipping rope. I developed small fractures in the "fleece"(dont know the word) surrounding my calve muscles. Takes pretty much 1 or 2 months to heal, so if you start to feel the slightest pain you cannot directly identify around your shins? take it easy, trust me on this Hope this helps.. Compartment Syndrome?