 But you put that 160 horsepower engine into a Ford F-250, and it's barely going to climb hills, and it certainly won't be able to pull a trailer. So you got that extra 120 pounds burdening your thyroid. Your thyroid has a finite output, and it's just not going to be enough to power your metabolism. So an effort was made to put you on thyroid medication. So let's explain that TSH. TSH is usually high.