Yes. First line of attack should be to experiment with improving the quality and/or quantity of your night sleep. If this happens to you mainly after you've bee

Yes. First line of attack should be to experiment with improving the quality and/or quantity of your night sleep. If this happens to you mainly after you've been awake for 8 hours, try a mid-day nap. If none of that helps, investigate medical conditions that might affect your arousal, be they psychiatric (depression, ADD) or physical (sleep apnea, eyes). A possible remote third option is that you're frequently traveling as a passenger and allow yourself to use the riding time to rest, so your mind associates the running car with a resting place.