noting that sleeping 1.5 hours per day less results in gaining more than a month of wakefulness per year, every year.
This is wrong. 1.5 * 365 / 24 ~ 22.8 days. I think this comes from the 33 days of life every year statistic later on, which is based on sleeping 2 hours less per day.
This is wrong. 1.5 * 365 / 24 ~ 22.8 days. I think this comes from the 33 days of life every year statistic later on, which is based on sleeping 2 hours less per day.