I cringed from a phantom pain as Swingle described using an essential oil on his swingle. If it is a pure essential oil without a carrier or medium, that will burn tremendously, possibly causing some peelage some time later. Any essential oil will give that heat / burning sensation: oregano, tea tree, etc. Essential oils in the health business are bogus snake oil salesmanship. They're powerfully aromatic. That's it. Now cooking or baking is another story.I wouldn't put so much guilt on yourself when watching shows about murders. I believe you are more fascinated with the subject than overjoyed. I think there's something about survival that plays into that fascination. Someone dies. "Oh, how did he die?," is the first question that pops into mind. Being better informed gives you a better chance at survival. I think of the human race as this huddle of bubbles floating around in a petri dish filled with harmful things. The lesser informed individuals sit far off at the edges, getting picked off by the sharks who for the first time enter a bay which previously was designated safe to swim; other edge humans get popped by dangerous bacteria in public swimming pools left by some swimmer suffering from diarrhea; even others fall upon the sword of a deadly toxin they use as part of their job. Being informed keeps you in the middle of the huddle.