I am 15 and I skateboard. 99.9% of the time when I get done eating and do somthing athletic like skatboard, bike, swim etc, I get a weird feeling. It is hard to desribe and i'll do my best. Its kind of like a dizzy feeling, it takes the energy out of you. The only solution that I have found is to wait it out until it goes away. It lasts for like 10-15 minutes. I am wondering if somethings wrong with me or if anyone could tell me what to do.