I made a thread about this a while ago, but I can't find it so I'll make a new one. Everytime I work out, I get a headache about an hour or so afterwards. It's not a really bad headache, but being someone who rarely gets headaches, it's annoying. Does this happen to anyone else? FYI: I drink plenty of water before my workout and try to replace exactly how much I lose through sweat. Edit: It doesn't seem to matter how hard I workout. Tonight I ran 1.5 miles at 5.5mph, then did some inclined dumbbell presses with 25lb weights just as a light "getting back into working out" workout. Edit: I've solved my problem It turns out it was nutrition related. Here's what I changed: - I now make sure I eat something 45-60 mintues before my workout; I normally eat a banana and a sandwich. - I eat a banana in the morning - I take a multivitamin - I drink gatorade after my workout (to replace sodium/sugar) - I eat a small meal no later than 60 minutes after my workout followed by another small meal 30-45 minutes later - I make sure to drink a lot of water throughout the day I'm not sure what exactly fixed it, but I don't care. I feel more energized before, during and after my workouts and I feel better in general. I'm still having a head CT scan done just to be safe, but other than that, .