I definitely fell into the "walking to and from buffalo wild wings" category. During UPT, I subsisted primarily on a diet of hard liquor and Reese Cups. I did the breathing exercise and strain my first couple of G exs then realized I didn't need to, so I just faked it by making the stupid breathing sounds the rest of the way through T-6s. Granted, we only went to about 7 gs, but I never had any ill effects. Maybe those last 2 gs are a motherfucker, I don't know. The guys who were in great shape were also the same ones puking their guts out. The best way to test G tolerance is probably to actually test G tolerance. If only we had a couple of centrifuges ...