Newborns (0–3 Months)
Ultradian 50-minute cycles totaling 14–17 hours across day and night feeding windows.
- Newborns cycle every 45–50 minutes and do not consolidate overnight circadian sleep until 3–4 months.
- Always follow AAP Safe Sleep guidelines (firm flat surface, back to sleep).
Select Age Group
:
Recommended 24h Sleep (AAP)
14–17 hours
Typical cycle duration
~50 min
Includes daytime naps in 24-hour total.
Cycle-Aligned Bedtime Options (7:00 AM)
20 cycles (16h 40m)
2:05 PM
19 cycles (15h 50m)
2:55 PM
18 cycles (15h)
3:45 PM
17 cycles (14h 10m)
4:35 PM
Official Sleep Duration Guidelines by Life Stage
| Life Stage | Recommended Hours | Cycle Length | Source |
|---|---|---|---|
| 0–3 months | 14–17 h | ~50 min | AAP |
| 4–12 months | 12–16 h | ~60 min | AASM |
| 1–2 years | 11–14 h | ~65 min | AASM |
| 3–5 years | 10–13 h | ~75 min | AASM |
| 6–12 years | 9–12 h | ~85 min | AASM |
| 13–17 years | 8–10 h | ~90 min | CDC |
| 18–60 years | 7–9 h | ~90 min | AASM |
| 61–64 years | 7–9 h | ~90 min | CDC |
| 65+ years | 7–8 h | ~90 min | CDC |
Frequently Asked Questions
How many hours of sleep are ideal for Newborns (0–3 Months)?
Recommended nightly recovery for Newborns (0–3 Months) is 14–17 hours, paired with a steady wake window near 7:00 AM to stabilize circadian rhythm.
Why is 2:35 AM an optimal target bedtime here?
Aiming for lights-out near 2:35 AM aligns complete 90-minute cycles and 15-minute sleep onset latency before your alarm at 7:00 AM.
Optimize the rest of your 24-hour sleep routine
Pair your cycle window with caffeine timing, power naps, or weekly sleep debt tracking.