You are built like a tank.
Must be 1st level. Str 13+, Con 13+. Base Fort +2.
Your weight increases by 50%. Your base speed decreases by 5ft (if you are wearing non-light armour, this has no effect). You are treated as Large when making grapple checks. You gain +4 to trip attacks on the defensive. Your successful bullrush attempts move your target up to 5ft further. You gain +4 on strength checks to burst chains or ropes.
You are not built like a tank.