What to do if i have allergic reaction if i do exercise after eating shrimps?

Exercise induced: Food associated anaphylaxis is uncommon, but can happen. Wheat and shrimp are the most common culprits. Patients can eat the food without exercising, or exercise without eating the food and be fine. Be very careful to not eat shrimp within 4 hours of exercise and i would suggest not at all on exercise days. You should also see an allergist and have an Epipen (epinephrine) available.