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Sleep with your SO's shirt

Expert insight:

Being in the presence of your romantic partner can relieve stress and put you at ease, says lead study author Marlise Hofer, a psychology graduate student at the University of British Columbia in Vancouver.

Simply breathing in his or her scent can have a similar effect, helping you sleep more deeply when you're alone.

The bottom line:

To sleep better when you're traveling or otherwise solo, bring one of your partner's recently-worn tees into bed with you. (It should have a faint but discernible scent.)

Study participants used it as a pillowcase, but wearing or cuddling with it would likely have the same benefit, Hofer says.