Get under the bar, do explosive lunges with each leg, switching your legs in the air, then do a push-up and jump up with your legs together. When you are in the air hold on to the bar and do a muscle up. Try to be slightly behind the bar at the time of jumping towards it so that you get a little swing, because if you are right under it you will get stuck and you will find it more difficult to do the muscle up.
legs, core, chest
core, lumbar, obliques
shoulders, core, lumbar, obliques
biceps, forearms, dorsals
triceps, chest, shoulders