Cable One Arm Tricep Extension

What it is

This isolation exercise targets your triceps, the muscles at the back of your upper arm, using a cable machine. It is a beginner-level push movement focusing on elbow extension. You will perform this exercise one arm at a time for balanced strength development.

Technique tips

• Keep your upper arm locked firmly against your side.
• Only your forearm should move through the extension.
• Breathe out as you straighten your arm downwards.
• Control the weight as you slowly return to the start.
• Squeeze your triceps briefly at the bottom of the movement.
• Ensure your elbow stays still and close to your body.

How to track your progress

Log the weight and reps of each set. Straddly turns every set into an estimated one-rep max, so a heavier single and a strong set of eight both count as progress, and it flags a personal record the moment you beat your best.