Harvard Men's Health Watch
Are there any benefits to exercising on an empty stomach?
On call Q. I have heard that exercising on an empty stomach burns more fat and at a faster rate. Is this true? A. When the body is in a fasting state, several backup mechanisms ensure your muscles and brain get the necessary sugar for fuel. During exercise, after your body’s sugar stores are exhausted, the body then taps into stored fat and turns that into sugar or turns protein