Exercise headaches

Got home from ALA this morning at 5:30am after driving all night. Slept two hours, unpacked, dozed in a patch of sunlight on the bed while the kids blew all their webkinz cash and ran wild. Then forced myself up to do run/walk in sunshine.

Ran 10-minute miles but have to alternate between run/walk to keep from getting an exercise headache. Anyone have any advice on these? I take Excedrin Migraine, which helps, but would love to get off the medicine!!!

Check out the cool data I get from my new Garmin watch from Brick Wheels now: http://connect.garmin.com/activity/76534191

So interesting to monitor heart rate with my speed and time!