2.Here's what a biker's legs look like after completing just one stage of the Tour de France:
3.And this is what an Olympic rower's hands look like after rowing for 1,000 km:
4.Here's what an X-ray of a child's hand looks like:
5.And here's how your hand changes over time:
6.Here are the smallest bones in the body (they're in the ear):
7.This is what it looks like to have your index finger amputated and re-attached as a thumb (this person was born without a thumb, and it's more useful to have a thumb than an index finger):
8.Here's what a corneal implant looks like:
9.This is what it looks like if you get a skin graft on your hand (if it's from a part of your body that grows hair, it will still grow hair once transplanted):
10.This is how amazing surgery is:
11.This is what it looks like if you push a Q-tip too deep into your ear (let this be a lesson not to use Q-tips to clean your ears!!):
12.This is what a cross-section of a bone looks like:
13.Here's what an actual human brain looks like:
14.Here are all the different layers of the skin as a wound heals:
15.Here's what it looks like to be born with two conjoined thumbs:
16.Here's how much muscles atrophy after an injury forces you not to use them (seen on the left foot compared to the right):
17.Here's what it looks like to get a tan when you have vitiligo:
18.And here's how vitiligo can affect hair:
19.Here's what it looks like to have Polycoria (aka multiple pupils):
20.This is how realistic a prosthetic eye can look:
21.Here's what strands of DNA look like:
22.Here's what a hand with no middle knuckles looks like:
23.Here's what all of someone's baby teeth look like after losing them:
24.And here's a baby tooth next to a wisdom tooth:
25.Here's how breast milk changes in color from just a few days after giving birth to weeks after:
27.If you have melanin in your skin, this is how the color comes back into your skin after a burn — aka in spots:
28.This is what a man without skin looks like, as seen in an anatomy museum:
29.You can see the difference a prosthetic eye makes here:
30.And here:
31.Here's how a bruise develops 36 hours after an injury (in this case, from a softball):
32.This is what "fire stains" or "toasted skin syndrome" looks like (it can occur from too much heat exposure — for example, from a heating pad):
33.This is how much the brain changes from age 12 to 22:
34.And this isn't really the human body, but it's so wild I had to include it...this is what a snake fang looks like after being pulled from your skin after getting bitten: