EXERCISE · MACHINE
Machine Tricep Extension
Arms
Done right, this should feel like your triceps and nothing else. Set the seat so the pivot lines up with your elbow, and pin your upper arms against the pad or your sides for the whole set — if your elbows drift forward as you push, your shoulders and chest start sharing the work and the isolation is gone. Extend your arms until they're straight without snapping your elbows locked, then let the weight pull you back under control until you feel a stretch through your triceps. The squeeze at full extension is what you're chasing here, not how much weight is stacked on.