Stand facing a cable machine with the bar or handle at upper chest height. Pull the bar down in a lat pulldown motion and transition smoothly into a curling motion by bending your elbows. Focus on engaging your lats first, then your biceps as you curl toward your shoulders, then reverse the movement with control.
Log your cable pulldown bicep curl sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.