I was just wondering, does anyone know or would suggest the amount of time you should wait after eating before exercising? I wasn't sure if the '45 minute rule' is just an old wives tale, or if that's really the minimum time you should wait. There's been a few days that I had dinner and went running fifteen minutes later, and felt fine. Would you say that's okay to do?

If you feel fine, go for it. You just want to avoid nausea from a full stomach and the increased body temperature.