The second and third groups took slightly longer than usual to fall asleep, but the first group was asleep, on average, more than 20 minutes earlier than usual.
Teise ja kolmanda grupi inimestel kulus magamajäämiseks pisut rohkem aega kui tavaliselt, esimesse gruppi kuulujad uinusid aga keskmiselt 20 minutit varem kui muidu.