Just like the fact that some people meet each day bright-eyed and bushy-tailed, while others are true night owls, we don’t all wake up with the same level of hunger in our bellies. Invariably, between spouses or roommates, one person wakes up ravenous while the other can take or leave breakfast. what is this about

Of course, there’s the obvious—and perhaps the most common—explanation: people who eat late at night (especially large portions) are more likely to face the morning without much of an appetite. On the other hand, if you closed the kitchen after an early dinner, your body had a chance to process everything you ate, freeing up plenty of room for breakfast.