I HAD A TINY BIT OF STUFF TO TAKE CARE OF TODAY, BUT I WAS FEELING SLUGGISH, SO I DRANK A CUP OF COFFEE. AND THEN I FELL RIGHT ASLEEP. I WOKE UP LATER AND STILL FELT SLUGGISH, SO I DRANK ANOTHER CUP AND THEN FELL RIGHT ASLEEP AGAIN. DOES ANYONE KNOW WHY THIS WOULD HAPPEN?