Fig. 2
Cumulative sleep time in minutes (panel A) and total number of naps (panel B) during Diagonale des Fous (DDF) and Trail de Bourbon (TDB). Proportions of naps by nap duration on the totality of naps declared by runners of the DDF and TDB (panel C). Proportions of naps by localization where the nap took place, according to the nap number for each runner (panel D)