It doesn't take much to push you (or maybe just me) over the edge. I'm running about like a blue-arsed fly at the minute, trying to finish my OU shite while working late..... eating later, and probably less. Last weekend I just managed the normal workouts, but I was f'kin jiggered, and stinking to high heaven of ammonia - muscle breakdown. Yesterday I tried the 20 minute interval effort on the bike which is usually hard, but my legs flick round, I pi*s sweat, breathe hard, no real problem. Last night I knew instantly I was in trouble, and seven minutes into it I was finished. Every pedal stroke felt like a conscious "weight-training" effort. It was a miracle I lasted the seven minutes. With an overhead light I look like a (very amateur ) bodybuilder - pretty ripped, which is fine and groovy, but jesus, put the system under a little bit of extra pressure in terms of reduced calories and sleep, and a bit more stress........ I dare say if I'd cut the resistance a bit I could have continued, so maybe it's only a 30 watt reduction in power, but unwelcome.