Think about nails scratching a chalkboard for one second. Are you flinching? One study found that this sound literally accelerated the participants’ stress levels, quickening heart rates, heightening blood pressure and even altering the skin’s electrical conductivity. In the study, the scientists discovered that—when stimulated with this screeching sound, the auditory cortex interacted with the amygdala, which controls responses related to fear and emotions.
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Have you ever had a pleasing reaction to something but were unable to articulate how it makes you feel because it makes absolutely no sense? For example, I love the smell of freshly opened tennis balls. I am fully aware that the smell shouldn’t be great, it’s hardly enticing on paper. If I had to describe it, I’d say it’s a musky, muddy, petroleum, rubbery odor. Sounds great, huh? Interestingly, there is a fraction of the population who, like me, loves this smell.
Well, I’m going to offer you a shortcut: the scalp massager. This Daddy Long Leg-looking device is used by gently placing it on the scalp and lightly pressing it down, so that the “legs” glide down your scalp. Try having someone else use it on you for the best effects.