Don’t burn the midnight oil wrapping presents, packing bags and tending to other last-minute trip preparations. Take care of these tasks ahead of time and turn in at a reasonable hour for a good night’s sleep (aim for seven to nine hours).
If you get plenty of sleep beforehand, “you’ll be less cranky and susceptible to stress,” Dr. Scott says. “And you’ll be less susceptible to catching an illness on the plane or train because your body’s systems will have rebooted during sleep.”
If you do snooze on the trip, Dr. Scott says, limit your nap to 40 minutes max so you won’t end up with a major case of sleep inertia that leaves you groggy.