Eating can help shift circadian rhythms, likely due to induced increases in body temperature and anticipatory secretion of orexin.

“Now you can also shift your circadian rhythm with eating. When you travel and you land in a new location and your schedule is inverted 12 hours. One way that we know you can shift your rhythm more quickly is to get onto the local meal schedule. Now that probably has to do with two effects. One or changes in temperature inducer, eating induced increases in body temperature. Now you should understand why that would work as well as eating has this anticipatory secretion of beta, of hyper cretin orexin that I talked about it earlier.”