Sleep & Recovery Calculator
Find your ideal bedtime based on sleep cycles for better rest and recovery
Sleep Calculator FAQ
Most adults need 7-9 hours of quality sleep per night. Athletes and those doing intense physical training may benefit from 8-10 hours. Sleep needs are individual — the key indicator is how you feel during the day. Consistent tiredness suggests you need more sleep.
A sleep cycle lasts approximately 90 minutes and includes light sleep, deep sleep, and REM sleep. Waking up between cycles (rather than during deep sleep) helps you feel more refreshed. Our calculator suggests wake times aligned with these 90-minute cycles.
Absolutely. Growth hormone is primarily released during deep sleep, which is critical for muscle repair and growth. Poor sleep reduces protein synthesis, increases cortisol (a catabolic hormone), and impairs performance. Prioritizing sleep is one of the most effective recovery strategies.
Key strategies include: maintaining a consistent sleep/wake schedule, keeping your room cool and dark, avoiding screens 30-60 minutes before bed, limiting caffeine after 2 PM, and avoiding heavy meals within 2-3 hours of bedtime. Regular exercise also improves sleep quality, but avoid intense training close to bedtime.