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Associations between measured sleep parameters during the five forced desynchrony sleep opportunities of protocol 2 and the cortisol awakening response (CAR). Participants’ binned data (binned into 4–5 intervals for a given sleep parameter, means±SEM) are depicted as black circles. Binned data were averaged within an individual first, as an individual could contribute more than one point to each bin. Linear (see Table 2) and quadratic models were not significant.
