Printable Sleep Journal

The AASM and Sleep Research Society consensus (Watson et al., 2015, Sleep, 38(6)) recommends 7 or more hours a night for adults; the AASM recommends 8-10 hours for teens and 9-12 for school-age children. The NHLBI notes that ongoing sleep deficiency is linked to a higher risk of heart disease, diabetes and other health problems. Use the hours slept field to track actual sleep, not just time in bed. If you regularly sleep too little or wake unrefreshed despite enough time in bed, talk to a doctor.

Sleep researchers look at efficiency (time asleep / time in bed), time awake after first falling asleep, and how restored you feel. The 1-10 rating captures subjective restoration, which is distinct from duration. Fragmented sleep can leave you feeling far less rested than the same number of hours of unbroken sleep. Pair hours slept with sleep quality ratings to spot quality issues that hour counts miss.

Caffeine's half-life is roughly five hours, though it varies widely between people, so a good share of an afternoon coffee can still be active at bedtime. Research has found that caffeine taken as much as six hours before bed can still measurably disrupt sleep. The caffeine after 2pm checkbox, paired with sleep quality ratings, builds personal evidence. Many people underestimate caffeine's impact on their sleep.

Light from screens in the evening, especially blue-enriched light, can suppress and delay melatonin, and engaging content keeps the brain alert; both can push sleep later. The screen time before bed checkbox lets you compare screen-heavy evenings with your sleep quality ratings to see whether it matters for you. Try a 1-hour screen-free wind-down.

Wearables estimate sleep from movement and heart rate; they are reasonably good at telling sleep from wake but less reliable at identifying sleep stages than laboratory polysomnography. They miss context: caffeine, stress, room temperature, dreams. This journal complements wearable data with the variables that often influence sleep quality. Clinicians still commonly use sleep diaries when assessing insomnia, and wearable data is not a substitute for a medical evaluation.

AASM red flags: trouble falling or staying asleep 3+ nights weekly for 3+ months (chronic insomnia), loud snoring with daytime sleepiness (suspect sleep apnea), legs urge to move at night (restless legs), or excessive daytime sleepiness despite adequate hours. Bring 2 weeks of journal entries; they help your doctor see the pattern and decide whether tests such as polysomnography or home sleep testing are needed.

The AASM Clinical Practice Guideline (2021) strongly recommends CBT-I (cognitive behavioral therapy for insomnia) for chronic insomnia, and its benefits tend to last longer than those of sleep medications. Key elements you can apply yourself: consistent wake time (even weekends) and stimulus control (bed = sleep only); sleep restriction is best done with guidance from a clinician. The sleep improvements prompt encourages testing one change at a time. NHLBI's healthy sleep tips are a reasonable starting point, though sleep hygiene alone is usually not enough for chronic insomnia.

Dream recall is linked to REM sleep, which makes up roughly 20-25% of a healthy adult's sleep. Frequent nightmares may indicate trauma response, sleep apnea, or medication effects; APA notes nightmare disorder is clinically diagnosable. Tracking dream recall (yes/no) alongside sleep quality may hint at changes in your sleep, though it can't measure REM directly. The notes section can capture dream content if therapeutic; psychotherapy traditions value this as self-insight material.