Good morning, I am an avid lurker here and I try to answers that I feel confidently knowledgeable about to answer but after much reading between answers to my own questions, other questions, and ...
I'm trying to figure out what the optimum heart rate should be for cardio exercise to burn fat. According to this website apparently between 60% and 70% is best for fat burning. Is this true?
I know that after depletion of glycogen body starts to use fat for fuel. If I continue working an hour or more in this state, does my body start to use proteins for energy after a while? I have some ...