A lack of sleep can affect not only cognitive functioning, as many previous studies have shown, but also physical activities such as walking, according to a new study led by the Massachusetts Institute of Technology (MIT) and the University of São Paulo. The scientists performed a series of experiments with student volunteers from the University of São Paulo in order to investigate the effects of sleep deprivation on gait control. The students were given watches to track their activities over a 14-day period. On average, each student...