Five false facts about the human body
You asked us to debunk some "facts" about the human body. Let's science this!
So here are five popular myths that just are not true.
First, we have five senses, right? Wrong. Depending on how you define a sense, we actually have between 5 and 33 of them.
Beyond the classics, we have a sense of balance and the ability to sense heat and time. That's along with all kinds of other cool spidey senses.
Second, what about the idea that giving kids sugar makes them bounce-off-the-walls hyperactive?
Nope -- the evidence for that cause-and-effect link is surprisingly slim. It's apparently more of a self-fulfilling prophecy than fact.
Myth number three. We only use 10% of our brains. This one drives me insane -- it's totally bogus. We use virtually every part of our brain and most of it is active almost all of the time.
Myth number four. Despite all the heavy lifting going on up there, it's totally false that we lose most of our body heat through our heads.
The amount of heat we lose depends on how much skin surface area is exposed to the cold. So, yes, you'll lose more heat through a bald head than a gloved hand, but the opposite is just as true.
And finally, I know what your mom said. But trust me, I'm a scientist. It doesn't take seven years to digest swallowed gum.
The base element of gum is pretty much indigestible, but it'll still pass through our system within a week if not faster.
CRITICAL THINKING QUESTION
Why might people have thought that we lose most of our heat through our heads?
Write your answers in the comments section below