Why Do Holes Get Bigger When You Wear Them?

Imagine your favorite shirt has a tiny tear. Every time you move your arm, that tear stretches a little more. It is like pulling on a loose string on a sweater; the whole row gets longer.

Clothes are made of woven threads. When one thread breaks, it creates a gap. Because the other threads are still holding on tightly, they pull on the broken ends. This pulling force makes the hole stretch out.

If you cut a perfect circle in paper with scissors, it stays round. But if you rip it, the edges become jagged. Those little bumps catch on each other and pull harder at certain points. The hole grows faster where the fabric is weakest. It is not magic; it is just gravity and movement doing their work!