the goal of zerg is to get a ton of army
z(x + y)^2 = 2000 lbs
ex: 1 zergling = 150 lbs, with speed and as, + 50lbs, + 50 lbs
fully upgraded zergling = 250 pounds
hydra = 1000 pounds + grooved, muscular (375 pounds each)
a ton of army is one crackling and one fully evod hydra