Are you getting enough sleep?

Maybe you stay up past midnight watching TV or checking your smartphone while lounging in bed. Or perhaps you snuggle under the covers and close your eyes at a decent hour, but then toss and turn, unable to fall asleep. Whatever the reason, the results are familiar to many people — feeling unrefreshed and maybe even a bit cranky when you wake up the next morning. According to the CDC, about one in three adults doesn’t get enough sleep.

“Some people have trouble falling asleep. But others choose to stay awake and end up chronically sleep deprived,” says Dr. Sogol Javaheri, a sleep specialist at Harvard-affiliated Brigham and Women’s Hospital. When you don’t sleep enough, feeling tired and bleary-eyed is only part of the problem. People who consistently get less than six hours of sleep nightly face a higher risk of heart disease as well as other, often co-occurring conditions such as diabetes and obesity. The exact mechanisms aren’t fully understood, but disruptions in blood pressure and blood sugar regulation likely play a role. Insufficient sleep also appears to raise stress hormone levels and inflammation, which also strain the heart.

What causes a sleep deficit?

Sometimes, work or family obligations prevent people from getting enough sleep. But in many cases, habits such as late-night TV binge-watching is to blame, according to Dr. Javaheri. “These people could sleep more if they let themselves, but they don’t make it a priority,” she says.

Other people have insomnia — trouble falling or staying asleep. These people want to sleep but can’t. An estimated 15% to 24% of adults have insomnia, which often (but not always) leads to insufficient sleep. The heart risks associated with insomnia aren’t as well defined as the risks from short sleep duration. Part of the reason stems from differences in the way researchers measure and define insomnia, says Dr. Javaheri. However, there is evidence linking insomnia to a greater risk of high blood pressure and heart disease, especially in insomniacs who also don’t get sufficient amounts of sleep.

If you’re not logging enough z’s on a regular basis, a number of strategies can help. Start by taking stock of your nighttime light exposure. “Evolutionarily, we were designed to sleep when it’s dark. But now we’re flooding ourselves with artificial light late into the evening,” says Dr. Javaheri. What’s more, the programs people watch on TV or other devices tend to be emotionally stimulating and addicting. They’re designed to make you click to the next episode, which often delays your bedtime, she says.

Televisions, computers, and smartphones (as well as energy-efficient lighting) are all increasing our exposure to blue light, one of the wavelengths in the visible light spectrum. Blue light affects the body’s circadian rhythm, our natural wake-and-sleep cycle. During the day, blue light stimulates and wakes you up. But too much blue light at night can make it harder to fall asleep. And all visible light suppresses the secretion of melatonin, a hormone that influences circadian rhythms. That’s why Dr. Javaheri recommends taking a “technology time-out” and dimming any bright lights for at least an hour or two before bedtime.

Drowsy vs. tired

If you have trouble dropping off to sleep, do something relaxing for at least 15 minutes before climbing into bed, such as reading; listening to a book, podcast, or music; or meditating. Don’t get into bed until you’re drowsy — that is, when your eyelids feel heavy and you’re nodding off and yawning.

“Feeling drowsy or sleepy is different from feeling tired. You can be physically tired but unable to fall asleep,” Dr. Javaheri points out. So if you’re tired but not drowsy, continue doing a relaxing activity until you do feel drowsy. Stay out of bed so that your brain doesn’t link that activity with being in bed; the goal is to train your brain to associate your bed only with sleeping.

Don’t look at the clock

If you think you’re sleepy but your mind starts racing as soon as you lie down, get out of bed. Do something relaxing until you actually feel drowsy. The same advice applies if you wake up at 3 a.m. and can’t fall back asleep. Don’t keep checking the clock, watching the time tick by. You’ll just become frustrated, further foiling your attempts to sleep, Dr. Javaheri says. If you end up sleeping only for a few hours, remind yourself that it’s not the end of the world. You’ll probably catch up on your sleep over the following day or so, she adds. But if you don’t, and if sleepless nights are the norm, consider checking out a more structured approach to combating insomnia (see “CBT for insomnia”).

CBT for insomniaCognitive behavioral therapy for insomnia (CBT-i) is a short-term therapy that teaches people to change the unproductive thinking patterns and habits that get in the way of a good night’s sleep. Typically, you meet with a therapist once weekly for an hour, for four to six weeks. You can search for certified specialists by going to the website of the Society for Behavioral Sleep Medicine (go to and click “Provider Search”) or the American Board of Sleep Medicine ( programs that you can do at home using your computer or smartphone may be a more convenient option. A program originally known as SHUT-i, which has the best supporting evidence to date, has been licensed by a company seeking FDA marketing approval of the program, now known as Somryst. If approved, the program could be prescribed by physicians and likely covered by some insurance plans. Another option is a six-week program developed by the Cleveland Clinic called Go! To Sleep (; it costs $40.

Bible verses for today’s meditation and inspiration: Matthew E. McLaren

Jesus replied, “Anyone who loves me will obey my teaching. My Father will love them, and we will come to them and make our home with them.” John 14:23 NIV

The Lord loves righteousness and justice; the earth is full of his unfailing love. Psalm 33:5 NIV

The commandments, “You shall not commit adultery,” “You shall not murder,” “You shall not steal,” “You shall not covet,” and whatever other command there may be, are summed up in this one command: “Love your neighbor as yourself.” Romans 13:9 NIV

But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, gentleness and self-control. Against such things there is no law. Galatians 5:22-23 NIV

Hear, O Israel: The Lord our God, the Lord is one. Love the Lord your God with all your heart and with all your soul and with all your strength. Deuteronomy 6:4-5 NIV

And he has given us this command: Anyone who loves God must also love their brother and sister. 1 John 4:21 NIV

For this very reason, make every effort to add to your faith goodness; and to goodness, knowledge; and to knowledge, self-control; and to self-control, perseverance; and to perseverance, godliness; and to godliness, mutual affection; and to mutual affection, love. 2 Peter 1:5-7 NIV

One thing I ask from the Lord, this only do I seek: that I may dwell in the house of the Lord all the days of my life, to gaze on the beauty of the Lord and to seek him in his temple. Psalm 27:4 NIV

“I have made you known to them, and will continue to make you known in order that the love you have for me may be in them and that I myself may be in them.” John 17:26 NIV

Dear friends, let us love one another, for love comes from God. Everyone who loves has been born of God and knows God. 1 John 4:7 NIV

For Christ’s love compels us, because we are convinced that one died for all, and therefore all died. And he died for all, that those who live should no longer live for themselves but for him who died for them and was raised again. 2 Corinthians 5:14-15 NIV

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