2. Stay Hydrated
The air inside plane cabins typically contains just 10 to 20 percent humidity, which is quite a bit lower than the 30 to 65 percent range that most indoor spaces are kept at. As a result, it can be quite easy for the body to become dehydrated, contributing to the fatigue of jet lag.
EverydayHealth.com recommends drinking eight ounces of water for every hour in the air, and warns that alcohol and caffeinated beverages (such as coffee, tea and soft drinks) can actually promote dehydration instead of resolve it.