I have just bought a Specialized levo FSR. When I looked at the mission control app after the first ride I'm sure it said I had burned 300 calories in about 40 minutes of riding. This sounds reasonable as I am heavy and I would expect to burn 700 or so on my normal bike. When I look at the stats now my effort appears to be 65 calories on a 40 min ride. This sounds disappointingly low as I pedal long stretches at 16+ mph with little assistance. Can anyone explain?