I have just start some intense exercise, I am training to compete in a boxing match in April. I have not exercised in years and am currently doing 3 sessions a week of an hour and half at a time, comprising of boxing, shadow boxing cardo and upper body strength, with full body sparring. I was under the impression that exercise lowers suger levels however at the start of a session I am between 5-6.3 at the end running anywahere between 23-27, why is this and what can I do to sort it out! Any advice helpful