Proper form is very real. We all share the same anatomy and the levers that are your arms perform the same way. A weight lifter might not arch their back compared to a power lifter when doing a bench press, but each setup is fine. A sumo or conventional deadlift are both fine, but bending your back to lift weight weight vs using your legs is improper. They’re not arbitrary patterns either, they target specific muscles because of the human body’s anatomy. You also don’t just randomly pick a different amount of weight…