This morning after waking when the alarm went off, you may have experienced a feeling of grogginess and lack of alertness. This is a physiological phenomenon termed “sleep inertia.” If you experience this, you are not alone. Aboard the International Space Station a NASA astronaut reported: “The morning started disastrously. I slept through two alarms, one set for 0600 and another a half-hour later to remind me to take some CEO (Crew Earth Observation) pictures. My body apparently went on strike for better working conditions.”