November is  National Sleep Comfort Month. Sleep is key to a healthy lifestyle.

A good night’s sleep is just as important as regular exercise and a healthy diet. Over the past few decades, both sleep quality and quantity has declined. In fact, many people regularly get poor sleep.

In patients with insomnia, daytime bright light exposure improved sleep quality and duration. It also reduced the time it took to fall asleep by 83%. Unhealthy daytime habits and lifestyle choices can leave you tossing and turning at night and adversely affect your mood, brain and heart health, immune system, creativity, vitality, and weight. But by experimenting with the following tips to find the ones that work best for you, you can enjoy better sleep at night, improve your mental and physical health, and improve how you think and feel during the day.

Here are a few things that you can change to improve your bedtime.

Try to go to sleep and get up at the same time every day. This helps set your body’s internal clock and optimize the quality of your sleep. Choose a bed time when you normally feel tired, so that you don’t toss and turn. If you’re getting enough sleep, you should wake up naturally without an alarm. If you need an alarm clock, you may need an earlier bedtime.

Avoid sleeping in—even on weekends. The more your weekend/weekday sleep schedules differ, the worse the jetlag-like symptoms you’ll experience. If you need to make up for a late night, opt for a daytime nap rather than sleeping in. This allows you to pay off your sleep debt without disturbing your natural sleep-wake rhythm.

Be smart about napping. While napping is a good way to make up for lost sleep, if you have trouble falling asleep or staying asleep at night, napping can make things worse. Limit naps to 15 to 20 minutes in the early afternoon.

Fight after-dinner drowsiness. If you get sleepy way before your bedtime, get off the couch and do something mildly stimulating, such as washing the dishes, calling a friend, or getting clothes ready for the next day. If you give in to the drowsiness, you may wake up later in the night and have trouble getting back to sleep.