Headache after working out?

 I have slowly increased my workout routines, going from simple to pretty intense over the past five or so weeks, but I have noticed for the last week that when I am done working out I get a headache, nothing killer, just a dull ache behind my eyes that's annoying. 

I have ruled out dehydration (I drink tons of fluids during the day), lack of protein (I get 60 to 100 grams/day) and blood pressure (I started taking it when I was done working out and when the headache started and it's normal). 

Any ideas? 

well you ruled out dehydration which is what I would lean towards....

how is your blood pressure. Could be that is goes too high in the workouts and causes the headaches....esp if its more of a pounding type headache.

I was surfing some other boards and someone there stated that the Dr gave them a Dx of exercise headaches.  Never heard of such a thing.

IAre you drinking before/during your workouts? Do you sweat a lot? It may not be dehydration, but your overall fluid requirements might be higher if you sweat a lot and not drinking while working out.

It may or may not be related to hydration, but also check your nutrition. I cannot do low carb on days of my long workouts - i feel like utter crap if I do. I usually get about 70-90 g of carbs when my workouts are around 90 min or so. (healthy carbs - not a lot of sugar)

General info you may or may not find helpful -

General Guidelines for Fluid Needs During Exercise

While specific fluid recommendations aren't possible due to individual variability, most athletes can use the following guidelines as a starting point, and modify their fluid needs accordingly.

Hydration Before Exercise
 

• Drink about 15-20 fl oz, 2-3 hours before exercise
• Drink 8-10 fl oz 10-15 min before exercise

Hydration During Exercise

• Drink 8-10 fl oz every 10-15 min during exercise
• If exercising longer than 90 minutes, drink 8-10 fl oz of a sports drink (with no more than 8 percent carbohydrate) every 15 - 30 minutes.

Hydration After Exercise
 

• Weigh yourself before and after exercise and replace fluid losses.
• Drink 20-24 fl oz water for every 1 lb lost.
• Consume a 4:1 ratio of carbohydrate to protein within the 2 hours after exercise to replenish glycogen stores.

 Thank you SOO SOO much for this information, I think you might be on to something. I do not drink while I am exercising, so I am going to follow those guidelines you posted and see if it changes anything, also someone else mentioned electrolytes so I think I am going to try and make at least one drink a no cal sports drink to see if maybe that will help! 

PS - reading your posts about the triathlon is SUCH an inspiration to me, it's been a goal of mine for a long time but have not really gotten in gear until recently and following your posts makes me even more determined to do it. 

I'm in the same boat as you. I get a headache every time I do some form of cardio. I've noticed they aren't nearly as bad if I work out in the cold or in the pool. 

Your blood sugar is dropping. Make sure to have some protien to keep blood sugars level.
Take care
StrawWalker

I was going to guess electrolytes. Maybe try some propel zero water or gatorade/powerade zero mixed into the bunch to replace electrolytes.

When I'm really active, I make a concoction of 1/2 water to 1/2 calorie-free sports drink. It seems to help me feel good during and after a workout.

 I think you might be on to something! I am going to try that and the fluid guidelines posted above and see if it helps!