diet question
I have been trying to start training for my first marathon, however I can't get past 8.5 miles. I am running them rather fast, probably faster than what I would be running during a longer run but I feel good....until mile 7.5. The last mile my stomache cramps and I feel like I am going to...sorry guys....explode. I stop my watch after 8.5 miles and bend over trying to stop the cramps and everything since I am nowhere near a bathroom. I drive home and make a mad dash towards the bathroom and make it just in time. It's been over two hours and my stomach is still cramping and I only ate half of my dinner. What's wrong?
Today I had a bowl of honey nut cheerioes and some orange juice. For lunch I had a diet coke, PB&J sandwich, wheatables with a piece of cheese, a granny smith apple and granola bar. For dinner I had a sloppy joe and some baked tator tats. I have drank about 50 oz of water all day. I think it's mostly dehyration but I have a job where it's hard to drink water all day. Any ideas about foods I should avoid and what I should be eating? How can I make water taste better?