 Subjects will have standardized and similar meals on all exercise days lunch at 13:00, afternoon snack at 16:00, dinner at 19:45, and breakfast at 8:00 the next day, based on the weight, with calculated carbohydrates and calories: 1 gram of carbohydrates per kilogram, the content of the meal according to the recommendation: comprising of 50 carbohydrate, 20 protein, and 30 fat, of which no more than 10 will be saturated fat. During the exercise the SAP group will turn off the insulin pump and lower their basal insulin for 20 for the next 4 hours after the exercise. 