Crux is a whole body workout that uses a combination of upper and lower body exercises to activate all the major muscle groups and the core. The result is a Level III workout that can be turned into a Level IV if each exercise is done really fast, piling up the revs and height becomes the critical component of the jump squats. Add EC for that extra load to your VO2 Max and suddenly you have a workout that will challenge your ability to get through it.
Extra Credit: 1 minute rest between sets.
