Perform a search on any bodybuilding forum and see how many hits you get for ‘NO’ and ‘pump’. Robbie Durand takes us through the science of NO production, elaborating on the role of insulin in increasing NO. He argues that a good insulin spike (that’s right, carbs!) will lead to better pumps, particularly if accompanied by high intensity training.
Insulin Causes Vasodilation in Muscle | Mind and Muscle
Insulin Causes Vasodilation in Muscle/Carbs will lead to better pumps