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Thailand

"Massage is a science here. It's often vigorous, with knees and elbows applying pressure, and much stress reduction." —Pam Sangsingkeo, 39, university lecturer; Bangkok

What you can do: Knead the nape of your neck and the surrounding area. "Stimulating pressure receptors releases serotonin, a natural antidepressant," says Tiffany Field, PhD, director of the Touch Research Institute at the University of Miami. Better yet: Get your partner to do it.

Next: Argentina