Why sleep matters
Sleep supports memory, emotional regulation, immune function, metabolism and cardiovascular health. One short night can impair attention; repeated sleep restriction can compound the effect.
How much is enough
CDC guidance says adults aged 18–60 generally need 7 or more hours each night. Older adults still need substantial sleep, though sleep patterns may change with age. Children and teenagers need more.
Common reasons sleep goes wrong
Irregular schedules, late caffeine, alcohol, stress, shift work, pain, reflux, depression, anxiety, sleep apnea and some medicines can all disrupt sleep.
Simple sleep habits
Keep wake time reasonably consistent, reduce bright screens and stimulating work close to bed, avoid large late meals if they trigger reflux, limit late caffeine and keep the bedroom dark, quiet and comfortable.
When “sleep hygiene” is not enough
Insomnia lasting months may respond to cognitive behavioral therapy for insomnia. Loud snoring, witnessed breathing pauses, morning headaches and marked daytime sleepiness can suggest sleep apnea and should be assessed.