I've recently been watching a lot of Youtube videos featuring Brian Shaw (and a few other strongmen competitors), and they all seem to be eating the same diet. The diet is called "The Vertical Diet", and it was created (I believe) by Stan Efferding. The main constituents seem to be meat (beef and bison), and rice. Efferding says that buying steaks are a better choice than ground meat, as the ground meat typically comes from the scraps on the table that are left over after butchering the animal. However, Brian (and Stan) both seem to also eat a lot of ground bison, in addition to steaks.
My question is why? Why not just only eat beef steaks (or bison steaks)? You can grind up the steaks if you prefer to have it a little more looser for digestion. What does the ground bison add that they don't get from the steaks alone? Is this ground bison coming from better cuts than typical ground beef?