Winter is great for snuggling, but bad for sex. Studies have linked shorter days and colder temperatures to lower testosterone levels and plummeting libidos. Arm yourself with these tips to keep winter from wrecking your love life.

You're Crankier

Your huge winter coat makes you feel more like Michelin man than sexy vixen, and the lack of sunlight increases melatonin and lowers serotonin levels, making you feel sleepier than sexy. Previous studies also found that most people experience a dip in testosterone levels during the winter months, which translates to a lack of libido. Try hitting the gym or going to the park to cut melatonin levels and boost testosterone and serotonin levels.