Figure 1

Effects of humid heat exposure at different segment of sleep on thermoregulation. Experiments 1 (26°C 60%RH stable (26), compared with 26°C 60% in the initial segment and 32°C 80%RH in the later segment of sleep (26 → 32)) and experiments 2 (26°C60%RH stable (26), compared with 32°C 80%RH in the initial segment and 26°C60%RH in the later segment of sleep (32 → 26)).. Reprinted from Okamoto-Mizuno K, Tsuzuki K, MizunoK, Iwaki T: Effects of partial humid heat exposure during different segments of sleep on human sleep stages and body temperature. Physiol Behav 2005, 83:759–765 with kind permission from Elsevier.