What muscles does 21s Bicep Curl work?
21s Bicep Curl primarily targets the biceps, with the forearms working as secondary muscles.
How many sets and reps of 21s Bicep Curl should I do?
A typical starting point is 3 sets of 21 reps, adjusted based on your goal and experience level.
What equipment do I need for 21s Bicep Curl?
21s Bicep Curl requires a barbell.