I've been into running on and off for the last 2 years or so, but I'm doing it more regularly at the moment, averaging around 20-25miles a week. My problem is that I know I'm not doing the right things re eating and drinking.
I feel like I need to have an empty stomach when running and so I don't eat or drink for at least 2 hours before and not at all during running. If I eat anything closer to running then I feel sick and if I drink anything then I get bad side stitches.
I've been enjoying 10mile runs and would like to do a half marathon and then a full marathon, but I think the lack of food and drink can't be good for me. So, what should I be eating/drinking and when? How can I get enough energy without feeling sick, and enough liquid without getting stitches? Also, are running gels any good?