That's so weird that you got the headache...must have been something about your breathing, or maybe a reaction to the chlorine? A branch of my gym not too far from here has a pool, I may go there once a week this winter for swimming. I get bored though, I usually watch something on my iPad when I'm on the equipment for cardio. For as active a job as you have, that exercise will eventually fuel your energy, I bet! Thanks for joining us on FS, my friend!