Sleep and Sleeping Well - Dr Linda Schachter Sleep & Respiratory Physician
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Why do we need sleep ? • Sleep is a dynamic behavior. Not simply the absence of waking, sleep is a special activity of the brain, controlled by elaborate and precise mechanisms. – Rest and Recharge – Aid memory and learning – Hormone secretion – Maintain normal immune function – Healing and repair of tissues – Maintain optimal emotional and social functioning while awake
• Melatonin rise delayed with puberty • Adolescent monkeys also delay melatonin rise with puberty • Blue computer screens suppress melatonin ‘Orange’ substitute: • ‘Nightshift’ Iphone iOS 9.3 • F lux program for PCs http://justgetflux.com/
When we sleep also determined by … Sleep drive Stress/ hyperarousal
SLEEP DEPRIVATION
How much sleep do we need? • The amount that allows us to be wide awake, alert and energetic throughout the day • The average sleep need for an adult is about 8-9 hours (range 4-10 hours) • The specific value varies considerably from person to person and may be a genetically determined attribute. • Amount required decreases over life cycle
Lack of sleep - causes – Lifestyle • Late bed time • Habits • Sporting commitments • Phone / computer • Work • Children – Health • Pain • Sleep disorders – snoring, sleep apnoea, insomnia, restless legs • Medication – Psychological - depression / anxiety / stress – Environmental - noise / light / travel – Shift work
The statistics… • 4 in 10 Australian adults – 7.4 million frequently suffer from inadequate sleep – 1.1 million – sleep disorders like insomnia & sleep apnoea – 2.5 million with health problems that affect sleep – 3.8 million routinely fail to get enough sleep
Likely if v Still tired when wakes in the morning v sleeping less than 9 hours a night v sleeping in on the weekends v still groggy on way to school v sleepy after lunch
Partial sleep deprivation (effects on school work) – Hard to think – Hard to concentrate – Poor complex problem solving – Poor memory – Poor visual and spatial abilities – Less creativity Get a good sleep to help learning Get a good sleep before exams
Partial sleep deprivation (emotional effects) – More mood swings – More chance of depression – Easily irritated – Less able to handle stress – More quickly aggressive Get a good sleep to be in control emotionally
Partial sleep deprivation (physical effects) – Less immunity – Increases likelihood of weight gain – More physical injuries in sport Get a good sleep to stay well
TROUBLE SLEEPING
Many different reasons Trouble: q Going to sleep q Staying asleep q Waking too early OR Feeling unrefreshed
Poor sleep is often more to do with what happens when awake than when trying to sleep
Anxiety / Stress and sleep – Heightened cortical and peripheral arousal (cf sleep - restorative state of diminished cortical arousal) – Problems with sleep initiation, maintenance and structure – Sleep that is restless and unsatisfying – Fatigue and irritability (may be due to sleep loss)
Anxiety / Stress • Biggest cause of poor sleep • Your thoughts can stress you Are your thoughts realistic? • Share stressful thoughts • What relaxes you? Try to do it everyday
Am I awake or asleep? • Easy to mix up • Mind keeps going in sleep • More aware of mind if stressed • Anxiety slows time • Most poor sleepers get more sleep than they think Even dozing in bed is good
GETTING GOOD SLEEP
Healthy Sleep Habits • Sleep schedule • Sleeping environment • Pre-bed routine • Bed is for sleep • Go to bed when tired • Avoid stimulants • Daytime exercise • Alcohol • Nicotine
Sleep environment - Bedroom More electronic devices in bedrooms = less sleep – Comfortable mattress / pillow – Cool - Don’t overheat with heavy bedclothes – Quiet - Reduce noise – No disturbances e.g. pets – Dark – Feel secure (night light?) – No clock if clock watch – Leave curtains open if needed – Consider app of white noise or rain
Daytime / Lifestyle – Routine sleep/wake times – Avoid sleeping in (no more than one hour extra on weekends) – Morning bright light – Long naps can be a problem – Exercise – Moderate alcohol, if any – No Nicotine – Have a ‘worry time’ …complete a ‘constructive worry sheet’
Pre bedtime routine - Evening • Have one hour ‘wind-down time’ before bed • e.g. music, bath, TV, magazine, chatting or novel – not school-work and not computers • Breathing exercises (Breathe2Relax app) • Mindfulness (Smiling Mind / headspace app) • No caffeine after 4pm • No late heavy meal • Avoid late major exercise • Don’t fall asleep before bedtime, not even for a minute • Avoid close screens
Bedtime routine § Get ready for bed in good time § Consider warm milk drink or herbal tea § Think positively about getting into your snug, calm bed Wait for a wave of sleepiness before trying to sleep
In bed § Turn off the mobile phone § Feet not too hot or too cold § Attitude is important § Think ‘feel good’ statements § Slow down your breathing § Exercise the imagination…create a story § Calm music may be Ok Can’t make yourself fall asleep Make your ‘worry time’ earlier in the day Bed is not the place to think about school work If wide awake and frustrated get out of bed and do something else for while
• Don’t give up quickly….be persistent… don’t expect perfection • The more relaxed you are about moving between sleep, wake and dozing the better your sleep will become
In conclusion…. – Sleep is as important as food and water – Sleep deprivation / sleep issues are prevalent and affect mood, memory, health & weight – Everyone can improve their sleep – If getting enough sleep and still tired, important to see your doctor
For more information about sleep www.sleephealthfoundation.org.au Click on Information Library/Fact Sheets A - Z Examples: qAnxiety and sleep qDepression and sleep qGood Sleep Habits qInsomnia qNapping qSnoring qUnderstanding and Helping Poor Sleep
Consider seeing a doctor… • Have trouble getting to sleep or wake up frequently during the night for a period of several weeks • Waking up tired despite getting enough sleep • Fall asleep at inappropriate times even after a night of adequate sleep • Have nightmares or night terrors (the experience of awakening in a terrified state without recollection of a dream) that interrupt your sleep • Sleep-walk • Have been told by someone that you stop breathing during sleep, especially if you have morning headaches or fall asleep easily during the day
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