Sometimes, when you bump your elbow really hard, your arm can get all weird and tingly, all the way down to your fingers! Some people call that "hitting your funny bone," but what you're hitting isn't a bone at all!

If you've ever had a little cut or scratch, you know it doesn't take long for it to heal! But do you know how different parts of your body work together to fix you up good as new when you're hurt?

Ever wondered what causes that strange tingling feeling? Well, settle in as Quick Questions explains how it works. Just be careful how you sit.

Arms and legs are pretty similar, from the amount of bones they have to the way their joints bend, but your legs have one thing your arms don't: kneecaps. Ever wonder why?

What makes you, you? Psychologists like to talk about our traits, or defined characteristics that make us who we are. But Brian Little is more interested in moments when we transcend those traits -- sometimes because our culture demands...

Howcast - Let belly dancer Irina Akulenko teach you how to do snake arms in this belly dancing video from Howcast.

Howcast - Learn how to do the penny through the elbow trick from professional illusionist Ben Nemzer in this Howcast magic tricks video.

Howcast - Learn how to do the b-boy dance move known as the chair freeze in this Howcast breakdancing tutorial with choreographer Victor "Kid Glyde" Alicea.

Howcast - Learn how to do the b-boy dance move known as a baby freeze in this Howcast breakdancing tutorial with choreographer Victor "Kid Glyde" Alicea.

Howcast - Learn how to defend yourself against a rear bear hug with arms pinned in this Howcast training video with Krav Maga expert Rhon Mizrachi.

Howcast - Learn about UFC fighter Joe Jones from kickboxing champion Phil Nurse in this Howcast video.

Howcast - Learn how to use your elbows to strike from kickboxing champion Phil Nurse in this Howcast UFC training video.

Howcast - Learn how to flirt with girls in this high school dating advice video from Howcast with expert Shallon Lester.

Howcast - Learn how do an overhead press from personal trainer Erin Sharoni in this Howcast workout video.

Howcast - Learn how to get biceps like Jessica Biel's from personal trainer Erin Sharoni in this Howcast workout video.

Howcast - Learn how to do hammer curls for a female arm workout from personal trainer Erin Sharoni in this Howcast workout video.

Howcast - Learn the top self-defense karate moves from karate instructor Richard Amos in this Howcast video.

Howcast - Learn how to do karate elbow strikes from karate instructor Richard Amos in this Howcast video.

Howcast - Learn how to do a basic karate punch from karate instructor Richard Amos in this Howcast video.

Howcast - Learn how to do a one-sided crunch from certified personal trainer James Rizzo in this home ab workout video from Howcast.

Howcast - Learn how to exercise for archery from the pros at Queens Archery in this Howcast video.

Howcast - Learn how to avoid common archery shooting mistakes from the pros at Queens Archery in this Howcast video.

Howcast - Learn how to pull a bow back properly from the pros at Queens Archery in this Howcast video.

Howcast - Learn how to do the mermaid move for prenatal Pilates from fitness expert Cait Morth in this Howcast workout video.