Most people's sleep efficiency begins to decline around age 40 and then begins to rise again around age 50. Most people over the age of 60, according to researchers, sleep longer each night.
Throughout our lives, there is a tendency for our sleep efficiency, or the percentage of the time we set aside for sleep that we actually get, to decline.
Participants wore accelerometers on their non-dominant wrists for seven days in a row, 24 hours a day.
We verified prior findings based on arbitrary measurement, says Su. "We discovered what people already knew—that kids and teenagers sleep less.
Furthermore, our research demonstrates that people sleep less while they are in their middle years. Those who are 60 years old and older also have longer sleep cycles, according to him.
Later in life, people tend to sleep in more, which may be due to the fact that most Americans still retire at age 60 and don't need to get up as early.
The researchers add that health issues and feeling unwell may be another factor causing older Americans to sleep for longer periods of time, and further research is required to explore these potential correlations.
However, we did find that there is a steady period, from ages 30 to 60 years old, where you have very consistent sleep efficiency. Traditionally, people believe that sleep efficiency goes down steadily with age.