“Pollen and animal dander are sticky; so when you encounter them, they often get trapped on your body and hair,” says Eli Meltzer, M.D., co-director of the Allergy & Asthma Medical Group and Research Center in San Diego. Tally up a typical eight-hour workday plus some evening time at home and you can potentially shore up quite an accumulation of allergens on your body, he says. Hitting the sheets without showering then gives these agitating compounds up close and personal access to your eyes and nose while you sleep. “And this lengthy nighttime exposure can spur allergic symptoms like a stuffy nose, leaving you exhausted, and often puffy-faced, the next day,” says Dr. Meltzer.
Allergy Easer: Hop in the shower before you hit the sack -- or, at the very least, change into new pajamas and wipe your skin down with a wet washcloth, advises Meltzer. “If that doesn’t work, try taking an antihistamine a few hours before bed to fend off allergens and their sleep-sapping symptoms,” he says.