How much sleep do I need?
Recommended sleep duration changes with age
You may remember being a child or teenager and needing a lot more sleep than you do now. This is normal across the human life-cycle, with sleep need reducing about an hour for most people 65+ years of age (as shown in the figure above). But more significantly than the change across age, note the variation in sleep need across the 65+ age group (5-9 hours). This shows how important it is for you to understand your unique sleep needs and what is required for you to not feel excessively drowsy during the day.