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Change of subjective reports of bodily discomfort and tiredness-fatigue from baseline to the 11th day of sleeping either 8 h/night (grey bar, N=8) or 4 h/night (hatched bar, N=10). Bodily discomfort and tiredness-fatigue were assessed every 2 h throughout the waking periods of the protocol and averages across a 24-h period. Original values are presented, and statistics were based on log-transformed values. Asterisk indicates significant difference between sleep conditions.
