Originally Posted by Null66

...I'm a huge fan of intensity, and intervals even. But there is no replacement for seat time.

Originally Posted by Jim from Boston

…My commute is really my only chance to train. I had long rejected the idea of intervals because getting on the Road early is a challenge itself, and I didn't want to lose my enthusiasm by punishing myself too much….

Intervals on the road during a defined commute are more variable than what one can do on a trainer. I have quickly learned that I must watch out for traffic and not pay too much attention to the stopwatch on my cycle computer. Sometimes the stopwatch times out during an interval and I have to reset. Often the terrain is out of synch with the interval, e.g. downhills on the intensity interval, uphill on the rest interval, with stoplights interspersed.

… I just use “Rating of Perceived Exertion” (RPE) as my monitor…