❌ Dumbbell Overhead Triceps Extension Mistake (DON'T DO THIS!) A common mistake in tricep extensions is allowing excessive movement of the upper arms and flaring the elbows. This shifts the exercise into more of a pressing motion, engaging the shoulders and reducing tension on the triceps. Additionally, flaring the elbows too much increases the risk of elbow strain or injury. To avoid this, focus on keeping your upper arms as stable as possible and your elbows tucked, ensuring the triceps remain