Scott Kelly

The calluses on your feet in space will eventually fall off. So, the bottoms of your feet become very soft like newborn baby feet. But the top of my feet develop rough alligator skin because I use the top of my feet to get around here on space station when using foot rails.

American Astronaut

David Goggins

A warrior is not a person that carries a gun. The biggest war you ever go through is right between your own ears. It's in your mind. We're all going through a war in our mind, and we have to callus our mind to fight that war and to win that war.

American Athlete

Misty Copeland

When I was younger, my feet would hurt a lot, but you build up calluses and strength, and you don't feel as much pain there. But then again, it's a give and take. The older you get, you may feel pain in your back or your hips.

American Dancer

DeAndre Hopkins

I've been catching footballs - I've been a wide receiver since I was 15 years old. And every quarterback I've had, for the most part, threw a pretty hard ball. So I'm not getting away from the calluses.

Suzi Quatro

The golden rule for playing the bass is that's it all about feel, not just plonking away. You need to feel the sound, not using a pick or a plectrum - which has meant plenty of calluses on my fingers.

American Musician

Pamela Stephenson

When I came off the boat I was very proud of the thick calluses which had developed on my feet. But now, I am struggling to get into my favourite high heels which is a shame, as I have so many.

Australian Actress

Ellen Hollman

You can tell a lot about a man from his hands. If they don't have any scars or calluses on them, you might as well assume they cry at romantic comedy films, too.

American Actress

Josh Groban

The honest-to-goodness answer is that Twitter tells me everything, and I have calluses on my fingers from all the mouse-clicking.

Paul Gilbert

I am trying to build the biggest callus possible on my first finger so I can do one-finger bends and vibrato like B.B. King.

Wallace Stegner

Most things break, including hearts. The lessons of life amount not to wisdom, but to scar tissue and callus.

American Novelist

A callus usually forms because of repeated actions, like playing guitar or manual labor.

Result of Repetition

Calluses can show that someone is experienced in a physical activity or job.

Indicates Experience

Calluses are typically not painful, unlike blisters or cuts.

Often Painless

Regular friction or pressure makes skin toughen over time, leading it to callus.

Physical Transformation

Some activities are purposely done to callus skin, making it less sensitive.

Can Be Deliberate

In plants, callus is like a healing process after injury or cutting.

Plant Healing

A callus can be an essential stage in plant propagation, aiding in new growth.

Part of Propagation

A callus in plants can also be a sign of stress or undesirable conditions.

Not Always Desired

 each time, with a syringe. And hand it off to the nurse. She squirts it into a tin. Hands it back to me. And we do that again and again. About 200 times usually. And by the end of this my arm is sore, I've got a callus on my hand, let alone Bob, whose rear end looks something more like this,

Daniel Kraft invents a...

 it's just because my thumbs are now so tough from digging in the dirt that my hands have become just one callus and they're too tough for neither thorns okay well that's not working oh well anyways they normally do work I