how many calories in a wendy's frosty shake
1 Calories In Low Cal Wendys Frosty. 69 calories, 3g fat, 12g carbs, 1g protein, 3g fiber. 2  Calories Burned For Treadmill: 15% Incline, 5.45 mph (11 minutes per mile)  Calories Burned For Treadmill: 15% Incline, 6 mph (10 minutes per mile)