On top of that, no matter how much I worked out or lifted weights, my core power was always lacking. And believe me; I was doing situps and crunches almost everyday. I was told that’s the only workout you needed for a strong core. The problem is that all of the ‘conventional’ ways to exercise, especially those machines in the gyms, are just designed to isolate and work a couple muscles at a time. While this may, when done most days of the week, achieve results that look incredible, the body is still pretty weak as a whole.