How does a person who often travels and stays in a hotel eat healthily?

Drink plenty of water and stay hydrated. Less oil and less salt, reduce the intake of caffeine and alcohol. If you are in a controllable diet, you should eat more and eat more healthy nutrition. Under uncontrollable circumstances, try to eat less and eat less oil and salt. Ensure adequate sleep. If you can't sleep because of jet lag and other factors, you can eat melatonin to help you sleep.