 Hey, YouTube, just here finishing out my workout for the night. It's half past some time and I had someone ask a question about calluses and how they develop And how specifically can they develop them? Okay, so let's first what are calluses? Well Calluses are this thickening of your epidermis Generally on areas that get worn. So it's the the skin actually gets thicker and it's it's unliving Kertanized skin. So it's it's pretty tough But it doesn't You know, it doesn't get blood supply. So When you weight lift and you grab a bar a bunch of times as You get fatigued Your grip starts to fail and you can't hold the bar quite as hard and as your fingers come out This skin on your palm actually starts to Stretch and pull from the bar. So the weight of the bar pulls my skin this way upward Okay, and that's how I get this Thickening right here. You see those little dots Right there and right there Usually they're bigger on these smaller fingers and Usually you won't see a very big one right underneath your index finger So you can see mine you have the three little dots on my pinky and ring and middle finger But you don't really see much here on my index finger So calluses develop as you lift more and more and they they select you for being better at lifting and at holding weight It's just another Thing in your body that adapts to weight training. So just like I put a bunch of weight on my back and I stress my bones they start to compress I lay in more bone and bone gets stronger. It's a very similar kind of thing Hungs Salier, I believe is how you pronounce his name But he's like the father of stress and adaptation and he came up with this rule called the said principle the SAID principle which stands for specific adaptation to imposed demands so in this case my imposed demands are skin stretching and the specific adaptation is a thickening of the skin or callus development So Callus development is just kind of like a byproduct of a grip that can't really Support the weights you're trying to use. I wouldn't necessarily like focus on developing calluses Probably at ever at any point What you'll notice is as they get bigger up. So here's an example. This just came to mind Crossfitters tear calluses a lot Olympic weight lifters probably slightly less like it's like actual Olympic weight lifters whereas Crossfit people do Olympic lifts as part of their cross-fitting sport. So Crossfitters are more fatigued while they're doing their lifts So their grip is less likely to be sufficient to support their movements as The grip starts to fail you pull on the skin more as it happens frequently you develop thicker and thicker calluses and as Sometimes it's thick enough and you get just the right angle that it actually tears that dead skin off and You'll you'll even it'll attach to the underlying Blood supply dermis skin, you know pull some of that up and your palm will start bleeding pictures all over the internet You'll be able to find them It's happened to me happens to everyone I just think it happens to crossfitters more often and there is a possible explanation for you It's the fatigue that comes with the stress on the skin I think that's all I got for you if you have more questions Just feel free to leave in the comments below Have you torn your calluses? Do you have any fixes for or or ways to mitigate? The byproduct of ripping skin off while you're working out. Love to hear from you. Thanks