Or as Coach said, "Elbows to knees, the abdominal squeeze" then after a bunch of those we'd do the Dead Bug together, lying on our backs with our legs and arms sticking out at 45 degrees, until one person collapses then Coach tells them to get 'em back up, and we all have to keep 'em up longer for some reason...... I was like 89 lbs in my last year of HS and I ended up in this heavy doody PE class, what they should have given me was an extra lunch. (and money to pay for the extra lunch)