RPM Upslope

Did RPM Challenge for an hour. Bike at ORQ felt slightly different from Capital Tower, took me a few adjustments to get the feel right. Tried to recall the toughness of climbing upslope on MTB yesterday and put that through the RPM bike's resistance. Geez, if I could not hold the resistance long enough on a stationary bike, I could forget about peddling up the trail slopes! Oh my, really drawing strength from the core just to step pedal down. Abs felt so engaged during RPM, I had an excuse to skip my abs-ball routine. Oops.