The Body Mass Index (BMI) has increased and today over 50% are considered obese. High BMI increases risks for diabetes and metabolic syndrome. The reasons are that calorie intake exceeds consumption, and ageing is associated muscle reduction thus reduced energy consumption. Physical exercise affecs positively these conditions includingthe brain by increasing cardiovascular performance and brain gas exchange. Two challenges will be targeted between the academic and Polar company: 1) How to motivate laymen and diabetic people of at high risk for this for physical exercise and 2) How to establish novel rewarding biofeedback biosensor loops that will illustrate clearly, rapidly and in exiting ways the positive impact of the physical and associated mental exercise to the performer.