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Short-term sleep debt (a few days) can be partially recovered with extra sleep. However, chronic sleep debt accumulated over years cannot simply be "repaid" by sleeping in on weekends. The best strategy is to establish consistent, adequate sleep going forward.

Chronic sleep deprivation is linked to weakened immunity, weight gain, impaired memory and concentration, increased risk of heart disease, diabetes, and depression, and reduced life expectancy. Even losing 1 hour per night adds up significantly over time.

Newborns need 14-17 hours, toddlers 11-14 hours, school-age children 9-11 hours, teenagers 8-10 hours, adults 7-9 hours, and older adults 7-8 hours. Most adults do best with 8 hours.

Set a consistent bedtime, reduce screen time 1 hour before bed, keep your room cool and dark, avoid caffeine after 2 pm, and aim to add just 15-30 minutes per night until you reach your target. Small changes sustained over time are more effective than dramatic shifts.