Because of a busy schedule, I'm one of those people who has to train in the morning. I've been eating my breakfast of oats and a banana about 20 minutes before training, with no problems to date. However, this morning I added a bit more weight to my routine, trained only a few minutes after eating (I was in a rush), and felt totally fucked afterwards. Totally.
Can light-headedness, and feeling a bit sick, be caused by the wrong food at breakfast, and the time you wait before training? It's possible this may be nothing to do with training, and could be the onset of a bug or something, but I thought I'd ask for your more experienced advice.