Featured in ask popsci
Is it safe to take expired medication?
They might be okay, but you probably shouldn't.
When you get a stitch in your side, what’s really going on?
Doctors still don’t know what causes it, or how to stop it.
Why do marathon runners get the runs?
It doesn't just work your leg muscles—racing is rough on your intestines, too.
Will cracking my knuckles give me arthritis?
The splintering sound makes the habit seem far worse than it is.
Why can’t we all touch our toes?
Don’t worry, it’s not a fair measure of fitness.
You can injure yourself stretching—but it’s not easy
Stretching should never cause agonizing pain.
Can you overdose on weed?
You probably can’t blaze yourself to death, but that doesn’t mean there’s no such thing as a marijuana overdose.
Is it possible to boost your immune system?
Every question you’ve ever wanted to know about how not to get sick, answered.
Why don’t we grow to be 10 feet tall?
Thank millions of years of evolution. And your parents.
Why you’re more likely to cry on an airplane
Welcome to the Mile Cry Club.