Do twenty-ones bicep curls build muscle?

  • Thread starter Thread starter finallegacy
  • Start date Start date
F

finallegacy

Guest
Some people are telling me that the twenty one's bicep curls (doing bicep curls with 7 reps from fully extended to half-extended, 7 from half-extended to fully bent, and 7 from fully extended to fully bent) builds muscle mass.

However, since I'm doing so many, it seems to me that it is more of a toning or endurance exercise. Can anyone give their opinion if twenty-one's are muscle mass building or endurance?

If not muscle mass building, could you give me what you think is the best exercise to gain muscle mass on the biceps?
 
Back
Top