When you exercise, your body produces a lot of heat. Which of the following explains where that heat comes from?
| Mass is converted into heat during exercise |
| It comes from the sweat we produce during exercise |
| During exercise, cells convert the carbon atoms in glucose into heat and ATP |
| Some of the energy in the glucose and fats molecules is lost to entropy as heat |
| According to the laws of thermodynamics, some energy was destroyed |