The reverse-grip pressdown is a single-joint exercise that targets your triceps while strengthening your upper back and rear shoulder muscles.
Facing an adjustable cable machine, grab a straight-bar attachment from a high setting with an underhand grip. Holding the bar, bring your elbows to your sides so your forearms are parallel to the floor.
Extend your forearms straight down by contracting the triceps. Pause, then raise forearms to the start position.
Lean slightly forward at hips.
To ensure a healthy back, keep your chin parallel to the floor.
Keep your elbows stationary throughout the movement.