Sleep Archive

Circadian rhythms, which are hardwired into nearly every cell of the body, regulate the heart and blood vessels. Disruptions to this rhythm-from shift work, poor sleep, or unhealthy habits-can raise the risk of cardiovascular disease. For example, heart attacks are more likely to occur on Mondays than any other day of the week. That's because people tend to stay up later than usual and then sleep in the next day. On Monday morning, when they have to wake up early again for work, the change may cause subtle changes in blood pressure, hormone secretion, and metabolism that raise heart attack risk.

People who suffer from chronic insomnia are more likely to develop cognitive problems and score lower on thinking and memory tests compared with individuals without chronic insomnia, a 2025 study suggests.

Waking up in the middle of the night happens to women more often after age 55 due to many factors. These include diminished hormones and circadian rhythm changes. Stress, bladder changes, medications, chronic pain, and alcohol and caffeine use can also contribute. People can break the cycle of nighttime wake-ups by practicing good sleep hygiene, addressing medical issues, trying mind-body techniques such as deep breathing or meditation, and limiting caffeine, alcohol, and heavy evening meals.

Research suggests that exercise is beneficial in managing insomnia, but current guidelines don't specify which types may be most effective. A 2025 study found that yoga, tai chi, walking, and running were associated with reduced symptoms of insomnia.

Influencers, news headlines, and well-meaning friends and family offer conflicting advice on wellness. Quick fixes and fads may do little for our health, and some even prove harmful. Try to work these five simple habits that can boost health and wellness into your everyday life.

A 2025 study suggests that sleeping nine or more hours nightly is associated with worse cognitive performance, an effect that's stronger among people with symptoms of depression.

Getting a sufficient amount of sleep is vital for heart health, but sleep continuity, timing, and regularity may also be important. Irregularities in these lesser-known dimensions of sleep health are not considered problems unless they impair a person's ability to function and quality of life. But emerging evidence suggest these sleep issues may affect cardiometabolic health. A sleep diary can help uncover potential issues.

Approximately 50 million adults experience some daily pain. These people usually encounter fluctuations in pain during the day, but in many cases, the pain worsens at night, disrupting sleep. Many strategies can be adopted to prevent and manage nighttime pain, such as doing a pre-bedroom relaxation routine, creating a healthy sleep environment, reframing negative thinking, changing sleeping positions, and using supportive pillows.