You're not doing anything extreme. You sat in a car. You crouched to tie your shoe. You bent forward and heard the seam go.
It's not your body. It's the construction.
Cheap garments use single-needle stitching and low thread count to save three cents per unit, and that's the exact point where your jeans split under normal movement. The denim itself might be fine—12oz, solid weave, nothing wrong with the fabric. But the thread holding it together? That's spec'd to be the lightest gauge that fits through the machine and still technically qualifies as stitching. It's not engineered for load. It's engineered for cost.
When you crouch, when you reach, when you move like an actual human, the seam takes tension. The fabric pulls in opposite directions. A proper seam disperses that load across the thread and holds. A budget seam just fails. You hear it pop because the thread was never meant to carry the weight of the fabric or the stress of your day.
Most brands don't publish their stitch specs because there's nothing to brag about. They're using the minimum that keeps the garment together through shipping. After that, it's your problem.
PØM doesn't use the lightest thread that fits through the machine. We use thread that's engineered for the load—because a 500GSM jacket moving on your body generates real tension at every seam, and the construction has to be as tough as the textile. Foundry Tier garments carry actual weight. The stitching has to match that, or the whole garment is a lie.
The seam is where the garment either works or doesn't. Everything else is just fabric waiting to come apart.
Related from The Archive: The Stitching Literacy Movement: How Teens on Resale Platforms Are Teaching Each Other to Spot Fake Construction Before Checkout, Heavyweight Garment Construction Transparency, Dupes Rip Off the Design But Skip the Fabric