A strange thing happened to me this morning. I struggled to get my HR to stay above 60%. Now for me this is very unusual 'cause I normaly struggle to keep it down. <br /><br />Heres the story.<br />On Thursday evening I jumped onto the trainer and did an hour keeping my HR between 60 and 70 %. To do this I had to have my resistance on the lowest and my cadence between 70 and 75 rpm. On Friday morning I did 30 minutes and the story was the same, low resistance, cadence between 70 and 75.<br />On Sunday I whent riding with a pal who is not very cycling fit so I told him to set the pace and I'll follow (I needed a long slow ride). througought the whole ride (42km) my HR only whent above 80% twice.<br /><br />So anyway, I jump on the trainer this morning wanting to do another 60-70% ride. I slowly start warming up but notice my HR does not want to go above 55%. I change to a harder gear, nothing, I change again and then increase the Cadence to just over 80. And only then did my HR start to move above the 60% mark. I sat like this for 30 minutes even reaching a cadence of 110 rpm. Only then did I near the 70% mark.<br /><br />My question is this, was this just because of the crispness in the air this morning, or was because of the low intensity rides that my body is rested and is now performing properly. Or did my fitness miraulously increase over night and I can do the Tour de France tomorow and kill Armostrongs times. (hahaha I wish)