Best diet for energy conservation
A vegetarian diet is (for energy conservation) the best choice. As we've discussed before, each middleman for the thing you eat loses 10% energy. So the best way to use all the energy is to just eat from the source. Another reason is the amount of money it takes to raise animals is so much larger than for vegetables. People might argue that you need the proteins and stuff from animals. But you can get proteins from all sorts of different plants.