Why are the site and time of insulin injection important to consider when engaging in physical activity?

When and where insulin is injected affects your blood glucose levels when you engage in physical activity


Increased body temperature and blood flow raises the concentration of insulin in the bloodstream by speeding up its absorption from the injection site. This effect is even stronger when the time of the injection is close to the start of a workout and when the injected site is on a part of the body being actively exercised.