When it is impossible to overcome fatigue with the appropriate amount of sleep, an individual's concentration and performance are restricted according to the extent of their fatigue. The object of the novel method and novel device is to prevent involuntarily occurring sleep by causing the tired user to experience a high degree of revitalization in a short amount of time thanks to sleep induced in an autonomously controlled manner and similarly induced waking. In order to overcome fatigue in a controlled manner, the waking time is made dependent on the muscle tone of an extremity, this muscle tone decreasing significantly at a moment which is considered favourable from the physical and mental aspects and is therefore used as a timer for a waking device. The novel method and the novel device are suitable for use in situations in which no time and no suitable place are available for conventional sleep but the extent of fatigue demands sleep.
METHOD AND DEVICE FOR WAKING PEOPLE SLEEPING BEFORE THE REM-PHASE OF A SHORT RECOVERY SLEEP