Stanford Sleepiness ScaleLoading...Sleepiness descriptionFeeling active and vital, alert, wide awake+1Functioning at high level but not at a peak able to concentrate+2Relaxed, awake, not at full alertness, responsive+3A little foggy, not at a peak, let down+4Foggy, beginning to lose interest in remaining awake, slowed down+5Sleepy, prefer to be laying down, fighting sleep, woozy+6Almost in reverie, sleep onset soon, lost struggle to remain awake+7