Drowsiness is manifested primarily by the desire to sleep. People can feel drowsy for a number of reasons, including lack of adequate sleep, the influence of medication, or the effects of sleep disorders. Drowsiness might also occur at regular intervals in the day and at night, according to the body’s natural circadian rhythm. Symptoms of drowsiness include yawning, lethargy, and falling asleep.
Brain on Board
Your brain is your vehicle's most important safety feature.
