close to significancep = 0.057
Time spent in REM sleep was close to significance (F (3,44) = 2.7, p = 0.057), where less time in REM sleep on D1-D3 showed medium-to-large effect sizes (D1: −30.9 ± 11.3 min, d = 0.97; D2: −22.8 ± 11.3 min, d = 0.71; D3: −15.1± 11.3 min, d = 0.47).