"The myth of the fat burning zone"

[shootingstar]

If you like intervals, do intervals. If you like long, slow distances, then do that. Just DO something. IF you only have a short time to exercise, then intervals is the best in calories/minute. But the exercise that you like, and will continue to do on a regular basis, is better than the one that burns more calories but you hate and will quit.

+1 especially for the bolded part.

Honest, I don't think I've tried intervals...and I've been cycling regularily for past um..17 yrs.

There have been times in life I could have benefitted from intervals, but impractical with pannier weight when one weaves in cycle commuting as part of one's lifestyle within a long complicated work commute. So I just cycle-plodded along from and to home in the dark with pannier weight. It was the only time I could muster. At least it was cycling of some form.