Originally Posted by
rdtompki
Your body will tell you (trial and error) if you need something during a ride or walk, but no one wants to bonk so most will consume a few hundred calories/hour during a longer effort.
Right. The general rule of thumb is to consume 200-250 calories/hr during aerobic activity.
BTW, a
recent study seems to suggest that exercising before breakfast provides more benefit than exercising after.