See, you're doing interesting things that probably inspire you, invigorate you, even as far as make you feel you're living and not just alive. Learn every single structure in the human body, its seemingly infinite functions, the myriad ways it can and does go wrong (and the relative frequencies of each), the plethora of signs and symptoms that indicate such a fault, and every treatment option available for it, then tell me you don't feel duller than a rock. XD
Don't get me wrong, it's interesting; it's also very, very draining.