I had been experimenting with assorted gels for the Vision Quest Mountain Bike Endurance race. I started with Crank E-Gels, then Cliff shots(yuck), power gels( sugar/sryup fest) and all the others. Finally I went back to the Cranky-gels and was happy again! Crank really works, I started to cramp after ripping up the first set of climbs. Then about a 1 hour in and every hour after, I tore off, one by one the 6 packs of gel I taped to my frame. With every Crank-E Gel I consumed my leg cramps magically disappeared. Crank E-Gel saved my race!