“…The changes in the other mood measures, foremost in the young group (i.e. the decrease in vigour, and the increases in depression, confusion, tension, anger, fatigue, total mood disturbance and irritability), are in accordance with several previous studies that reported higher fatigue (Drake et al., ; Scott, Mcnaughton, & Polman, ), anxiety (Pires, Bezerra, Tufik, & Andersen, ), depressive symptoms (Paterson et al., ; Scott et al., ) and confusion (Drake et al., ), as well as reduced vigour (Drake et al., ; Scott et al., ), happiness (Paterson et al., ) and activation (Paterson et al., ) after sleep deprivation. In the present study, participants also felt more hungry and cold after sleep deprivation, which could be interpreted in line with the increased appetite (Knutson, Spiegel, Penev, & Van Cauter, ) and altered thermoregulation (Romeijn et al., ) described previously.…”