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 on to the local meal schedule. Now, that probably has to do with two effects. One are changes in temperature and eating induced increases in body temperature. Now, you should understand why that would work. As well as eating has this anticipatory secretion of hypocretin orexin that I talked about earlier.