Your center of gravity has shifted and all that extra weight around your middle may be pulling your back out of whack and messing with your balance.
你的重心已经发生偏移了，所有环绕在你腰腹部的增加的重量可能会使背部不一致并干扰你的平衡力。
3
So NPY produced in the brain initially makes you eat more and gain weight around your middle, and then that fat makes more NPY, which makes you eat more.