Round 1: Sumo vs. Business Saw this advertisement in an airline magazine on my way to a wedding in Omaha last weekend.  Take a look at the flat back alignment of the sumo wrestler vs. the hunched-over businessman.  I bet they didn’t even consider it when doing the photo shoot.  Goes to show you can be stable AND mobile 🙂 Although I didn’t run an FMS on these guys, odds are the businessman is rounding his back due to either: 1) Tight hip flexors that don’t allow his hips to f