 they actually have big chests and larger lungs. Also, athletes sometimes have larger chests and larger lungs. I'm not sure if you're an athlete. Maybe that factors in. I'd have to ask you something about that in a history. Okay, so what's LDH? LDH, unfortunately, is kind of a nonspecific marker. You always get an LDH on a blood test, on a SMAC or a comprehensive chemistry panel.