American Ninja Warrior - 4 steps to training

One of the reasons I love Ninja Warrior is that no one type of athlete, body type, age or discipline is perfect for it. The rock climbing guys are usually great at Stage 3, but there is a heap of balance obstacles to trip them up before before then. I have no real background, I did competitive dancing in my early 30s, then played a heap of indoor soccer, and gym it up a lot, but I've overhauled everything to train for Ninja Warrior. Basically, my thinking is that the four areas I'm training are: Parkour, Rock Climbing, Calisthenics and Endurance. I am brand new to all of these things, but it's fun.