Our interesting facts on each riddle will be fun to read, so take your time. Now let’s get started and see if you are up to the challenge. Completing our riddles won’t be easy, however they are a great workout for your brain. You will need to use logic, common sense, out-of-the-box thinking and your imagination. When awake, your brain produces enough electricity to power a small lightbulb! Your brain is more complex than even the toughest quiz. The human brain is actually composed of around 100 billion total neurons in addition to a trillion glial cells.