 [ Symptoms ] why do i get an intense tinglingitchy sensation all over my body when i work out i take no extreme a supplement [ Disease ] well this can be a result of a number of things commonly when we exercise we dilate our peripheral capillary beds shunting blood toward the skin to assist with cooling this capillary dilatation can lead to an itching sensation no may have some vasodilatory properties and thus be enhancing these feelings more ominous is exercise related anaphylaxis in which    with high intensity exercise    your body can have a reaction similar to any other allergic reaction this is not very common but if you experience other symptoms beyond just itching i would seek the advice of a local sports doc