But how many curls exactly should you be doing to build size? And which dumbbells should you head for? If you're looking to make your arm day more effective, here’s how to find your optimal rep ...

A man performing bicep curls and another man performing hammer curls with a pair of dumbbells. Yahoo is using AI to generate takeaways from this article.

Add either bicep curl variation to your routine and your muscles will thank you. The Two Most Effective Bicep-Building Exercises Few Use, Shared by an Exercise Scientist first appeared on Men's ...

If you're looking to fill your shirt sleeves, consider this your guide. Find out how many bicep curls it takes to build muscle and which weights to choose.