Only 17% of UK adults get the recommended 8 hours sleep a night. Just over half only manage 6 hours or less . Not getting enough sleep increases risk of diabetes and obesity. As a physiotherapist I often see people who have neck, back or shoulder pain and I always ask about their sleep. Our quality and quantity of sleep varies through out life. Going out socialising, working long hours or night shifts, studying, having a baby and daily stresses all affect how long we can sleep for and the amount of deep sleep we get.
Our body does much of its "spring cleaning" as we sleep - removing waste products from body and brain cells and healing damaged tissues. If we have poor quality sleep these
processes are slowed down and are less effective. Our body responds to the fluctuations in light and dark. The cells at the back of your eyes send a signal to the master clock in your brain. The brain then sends signals to your hormone producing glands to regulate your body systems - letting you know when you are ready to wake up, eat and go to sleep. This is known as your circadian rhythm. If you get up at the same time every morning (including the weekend) and go to bed at the same time every night your circadian rhythm will thank you for it.
Sleep scientists recommend that exposing yourself to natural light in the morning is a great way to help the circadian rhythm. As we spend many hours indoors or in a car we do not get sufficient lux of light (measurement of light). Full sunlight gives 30,000 lux and going outside on a cloudy day gives 10,000 lux - whereas being indoors or in a car means we may only get 500 lux. Even when the weather is typically British winter the level of light you will get outside is 100 times greater than you have indoors. Light Meter is an app that can measure your daily light exposure. In 2014 researchers found that people who spent more time outside in the mornings had lower body mass indexes. In 2016 a study of 30,000 women found that people who smoked but spent a lot of time outdoors had the same mortality risk as people who did not smoke but spent a lot of time indoors.
A recent study August 2020 found that a 60 minute session of moderate intensity exercise, aerobic exercise, individual exercise done in the afternoon can reduce insomnia and improve sleep quality. Moderate intensity exercise includes :
Walking briskly (about 3½ miles per hour)
Bicycling (less than 10 miles per hour)
General gardening (raking, trimming shrubs)
Dancing
Golf (walking and carrying clubs)
Water aerobics
Canoeing
Tennis (doubles)
To encourage yourself to feel sleepier in the evenings, spend as much time as possible outdoors in the morning and afternoon and then stop your exposure to bright lights in the evening. Our brain cannot differentiate between morning light and the blue light on mobile phones, tablets and laptops. Bright light suppresses the secretion of melatonin, the hormone than prepares your body for sleeping. Looking at these devices in the 2 hours before bed sends a conflicting message to our brain. Use the built in filter or apps to reduce the blue light on your devices if you must use them otherwise turn them off and enjoy a relaxing bath or shower, meditate, do yoga or read a book. Keep the lighting dim or use candlelight. Equally sleep scientists have found that blocking out light from outside street lights, cars and security lights with some black out blinds or thick curtains can help improve our sleep. A tranquil, cool, dark clutter and tech free bedroom is a great start towards better sleep. Ideally your bedroom should be 16-18 degrees Celcius
Our brains respond well to the amber glow of a fire. Anyone who has been camping or has an open fire or a log burner will recall feeling sleepy earlier in the evening. Amber glasses have been used by some people for as little as an hour in the evenings to induce sleepiness. There is anecdotal evidence that if you need a night light for young children, using a red light may help them sleep for an hour longer than usual.
US scientists found that a hot shower 90 minutes before bed helped people to go to sleep 50% faster and increased their sleeping time by 15 minutes on average. Hot water is a vasodilator - it widens your blood vessels and helps your skin lose excess heat. This assists your body in lowering your core temperature which is an essential process to falling asleep.
If you like to stay up late, try spending more time outdoors in the morning which will make you feel alert earlier in the day and sleepy earlier in the day , which can reduce the amount of coffee you need to get going in the morning. Caffeine can remain in your system for 6 hours and it is known to disrupt sleep, so if you struggle to get off to sleep it can be helpful to stop drinking coffee after midday.
The Automated Morningness-Eveningness Questionnaire takes 5-10 minutes and gives you advice about your circadian rhythm type https://www.cet-surveys.com/index.php?sid=61524&newtest=Y
Rate your sleep health
Do you wake up feeling refreshed?
Do you wake up every day within 30 minutes of same time without using an alarm?
Do you fall asleep within 30 minutes?
Score
Never or rarely 0
Occasionally 1
Almost always 2
Score of 6 is excellent, anything below 6 identify the lifestyle factors and change two or three to feel the benefits of good sleep
What are the benefits of a good night's sleep?
Increased energy
Improved concentration and memory
Greater capacity to learn
Better ability to make healthy food choices
Improved immune system function
Improved “spring cleaning” in body and brain
Reduced risk of long-term conditions such as diabetes, leaky gut, Alzheimer’s
Increase life expectancy
Reduced risk of being overweight, migraine’s
Reduced stress, anxiety and depression levels
Getting up at the same time every morning will sync your body rhythms
15 ways to improve your sleep
1. Take an outdoor break in the morning
2. Enforce a strict “no caffeine after noon” rule
3. Turn off all devices - mobile phones, laptop, tablets, games console, TV ideally 90 minutes before bed ( I know, its hard! start with 30 mins and build up to 90 mins)
4. Set an alarm to tell you when it’s time for bed
5. Fit blackout blinds or thick curtains in your bedroom
6. Remove all screens from your bedroom
7. Consider opening your bedroom window. The perfect temperature for sleeping is 17°C/65°F
8. Eat earlier in the day before 7pm if possible
9. Exercise earlier in the day
10. Socialize earlier in the day
11. Buy red lights for night time lights
12. Buy amber glasses to filter blue light from screens
13. Don’t use your phone as an alarm clock
14. Use night time/twilight mode on your devices
15. Avoid vigorous activity in the three hours before bed