40 Crazy Health Facts You Won’t Believe You Never Knew

4. Anxiety can make bad smells even worse.

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We all know that anxiety can make simple tasks harder, but did you know it affects your perception of smell, as well?

A 2013 study published in The Journal of Neuroscience examined the effect of certain emotions on smell. After exposing subjects to anxiety-inducing images—like car accidents, war, and other horrible things—researchers found that subjects interpreted scents that they’d previously considered neutral as unpleasant and smells that were already considered bad were much worse.

5. Big eyes tend to be more nearsighted.

Big eyes, meaning eyes that are longer from the front (cornea) to the back (retina), are more prone to nearsightedness. Also known as myopia, this condition that causes distant objects to look blurry is caused by light not properly reaching the retina. If your eyeball is particularly long, light is focused too soon before it hits the retina—and by the time it does reach the retina, the image is blurry, according to the National Eye Institute.

6. Coffee can ward off depression.

Good news, coffee lovers: Caffeine might actually be helping you ward off depression. A 2016 meta-study on the relationship between coffee and depression published in the Australian and New Zealand Journal of Psychiatry found that each cup of caffeinated coffee consumed per day decreases someone’s risk of becoming depressed by 8 percent.

7. Eating eggs improves your reflexes.

Eggs contain an amino acid called tyrosine, which the body synthesizes into norepinephrine and dopamine, compounds that increase energy, alertness, and improve mood. In a 2014 study published in the journal Neuropsychologia, researchers found that tyrosine enhances our ability to respond faster to stopping an unwanted activity.

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