Most people ruin their chest on the pec deck — here’s how to fix it. If your pec fly feels more like a shoulder stretch, you're doing it wrong. The key is to maximize the lengthened position, where the pecs produce the most tension. ✅ Slightly tuck your elbows ✅ Keep wrists aligned with elbows ✅ Open the chest, not the shoulders ✅ Control the stretch for 1–2 seconds ✅ Don’t chase weight — chase tension This keeps the load exactly where it should be: on the pecs, not the front delts. Train with i