Ha! Got your attention, huh? Here's my question... Does anyone know the physiological mechanism of "Runner's High?" Does it have to do with endorphins, serotonin or dopamine? I went running today for the first time in a few months and can't believe how much it has affected my studying and ability to concentrate. It's amazing!!!! Instead of getting up every 20 minutes to check the contents of my fridge, I can sit still for a couple of hours. Also, that spliting tension headache that's been around since I first started studying for the MCATs in January is noticeably gone today!!! And I'm awake right now, at midnight?!!???!! WOW!!!!