Bayesian Cable Curl

What it is

A one-arm cable curl done facing away from a low pulley, so the working arm starts slightly behind the body. That position stretches the biceps long head at the bottom, where most curls are easiest. Keep the upper arm still and curl through the full range.

One side at a time: log each side, and match the reps of your weaker side.

Technique tips

• Face away from the pulley with a split stance
• Let the elbow drift slightly behind your torso at the bottom
• Keep the upper arm still as you curl
• Lower slowly into the stretch

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.