RE: Skipping/speed Rope?
It's down to technique - the better your technique, the easier you'll find it. Then you can start making it harder for yourself by varying speed, leg pattern (LRLRLR LRLLRRLLLRRR LLLLLLLLLLRRRRRRRRRR etc.), adding intervals (10s sprint, 10s active recovery), raising knees, raising legs, crossing hands (as the rope passes your feet, cross hands quickly so that next time you jump your arms are crossed) and combinations of these things. Damn, you could even sing too :-)