I do this, but usually more by accident than anything else— I lane swim (1hr) or do a bike ride (1.5-2hrs) first thing in the morning before I've had much of a

I do this, but usually more by accident than anything else— I lane swim (1hr) or do a bike ride (1.5-2hrs) first thing in the morning before I've had much of a chance to eat anything, and then afterwards have a big protein shake or some bacon and eggs. I feel like I'd be prone to cramps if I tried push myself after having eaten much.