Headache after running?

zoominzozo

Hi all,

I've always suffered from headaches at the front of my head after I've ran further than normal.

A 5k is no problem, but today I've done just an 8k (it's only 3k more) and I've got the usual dull ache.

I drink water before and after and sometimes during sometime I drink lucozade sports drinks/powerade and still achey. I'm wondering is it a lack of salts or sugars.

Any ideas?