1831. Men especially would rather give themselves electric shocks than sit quietly in a room and think!

1832. Synesthesia is a condition where stimulation of one sense automatically evokes a perception of another sense.

1833. People with synesthesia might “taste” words, “smell” sounds, or see numbers as colors.

1834. While it’s not known exactly why this occurs, the prevailing theory is that these brains have hyper-connectivity between sensory areas in the brain.

1835. The human brain is extraordinarily complex and consequently can go awry in some spectacular ways.

1836. Some of the strangest disorders include exploding head syndrome disorder (hearing phantom explosions in your head), Cigar syndrome (thinking loved ones have been substituted by impostors, robots or aliens), and Cottar’s syndrome (believing you are dead).

1837. Savant syndrome is a condition where those with serious mental disabilities have an “island of genius.”

1838. Most savants are born that way, but a brain trauma can cause acquired savant syndrome where ordinary people suddenly develop genius-level abilities they didn’t have before.

1839. Brain cells need a constant supply of fuel to stay alive, yet they lack the ability to store energy.

1840. Your liver breaks down stored fat to produce ketone bodies that can be used as a substitute fuel when commonly-used blood glucose is not available.