You can also just eat nothing in the morning. Hunger and feeling low energy in the morning without food is all about about being used to eating in the morning.
Even if you do like, hard labor? I do fabrication work in the morning, usually. Seems like carbs help.
Eggs stave off hunger SO well. When I'm gonna be on the road, the only breakfast that fits the bill is 3 or 4 eggs - no more overpriced stale barfy airport-style crap for me, thank you very much!