Fixed bar path behind you means pure trap focus.
Stand close to the bar so it tracks up your back and doesn't drift away from you.
The Smith Machine Behind the Back Shrug isolates the Traps — no passengers. That makes it a clean tool for adding targeted traps volume without extra fatigue.
The Smith Machine Behind the Back Shrug primarily works the Traps.
Pick a weight where you finish each set with 1 to 2 clean reps left in the tank. Own the top of your rep range before adding weight.
For most lifters 3 to 4 working sets. Pick the rep range that fits your goal and progress the load when the top of the range feels owned.
