Originally Posted by
redlude97
I've lost 20+ lbs this season on diet soda and intermittent fasting, and not fueling during base training rides. I can now do up to 4 hours(probably more) of Z2 on just water with fat adaption from fasted base training, so YMMV on that list.
I'm a big fan of exercising in fasted state. Been doing it for years. I do it at all levels of intensity, though. I normally do it first thing in the morning. For me it was just practical as it's really the only time I am able to do it.
Zone 4 and 5 are tough half an hour after you've just woken up.