Yeah, I know I rag on wobble stuff all the time. I even did Masters Work on unstable surfaces. So I can say with a fairly high degree of certainty: If you're trying to get really strong, This Exercise Should Probably NOT be One of Your Primary Strength Exercises. But for accessory stuff, it ain't all that bad. Here's The Deal: We'll start with the bad <---ALWAYS start with the bad. Get up and "eat the frog" Using an unstable surface instantly makes you weaker. "It has been established that there is a significantly lower peak isometric force and rate of force development during resistance exercises under unstable as compared to stable conditions. In … [Read more...]