Make sure your body gets all the rest it needs by avoiding the mistakes that rob you of sleep.

4. It dulls your mood and steals your memories.
Commonly known as the stage of sleep in which we dream, the REM cycle of sleep has daytime effects as well. But if your sleep is frequently interrupted, your brain may spend less time in the much-needed REM state. The result? You feel sluggish and have trouble performing tasks and remembering things. “People with fragmented sleep schedules who are able to get more solid REM sleep have a better sense of feeling refreshed, feel better about their well-being, and therefore have better moods,” says Dr. Shives.

Do this: Eat more fish. According to Men’s Health magazine, omega-3 fatty acids can boost your memory and increase serotonin, a hormone responsible for happiness. You can find the fats in certain fish, such as salmon and tuna, as well as in fish oil supplements. Make sure you choose sources that have been harvested sustainably, like wild-caught Alasksa salmon, or U.S.-caught sardines. To get more REM sleep, Prevention recommends sticking to a regularly set bedtime. Also, rid your bedroom of whatever may be interrupting your sleep; make pets or snoring spouses sleep somewhere else (which could motivate that snorer to take that sleep test).