How long a person must sleep depends on the age of the person:

Babies:

• 1 – 4 weeks: 15 – 17 hours of sleep per day
• 1 – 4 months: 14 – 15 hours of sleep per day
• 4 – 12 months: 14 – 15 hours of sleep per day

Toddlers

• 1 – 3 years: 12 – 14 hours of sleep per day
• 3 – 6 years: 10 – 12 hours of sleep per day

School aged children

• 6 – 12 years: 10 – 11 hours of sleep per day

Adolescents

• 12 – 18 years: 8 – 10 hours of sleep per day

Adults

• 18 years and older: 7 – 8 hours of sleep per day
  
  
  
  
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