Darren870
Member
If you want to improve core stability, do heavy squats. Squatting on an unstable surface is not a good way to get a stable midsection, but squatting 350 pounds is.
If you're looking for balance, do agility drills.
A good article to read for everyone here:
http://www.mensjournal.com/magazine/everything-you-know-about-fitness-is-a-lie-20120504
Its more for balance and core. I would NEVER squat on a swiss ball, but I squat on a bosu ball (flat side up). I do no weight squats, or maybe ill hold a 10lb medicine ball out. It is a good core/balance exercise, but so is squatting 350lbs like you said.