If you're an average sort of person, 36 percent of your life will be spent asleep, which means that if you live to 90, then 32 years will have been spent entirely asleep.
平均して 人は 人生の36％を寝て過ごします つまり 90歳まで生きるとして まるまる32年間を 眠りに費やすわけです