Gym Doctor: Peak Contraction

SYMPTOMS: Getting a good peak contraction in the end of 
the positive part of the rep is important for instigating muscle
growth. However, when you do barbell curls, it is difficult to really
 contract the biceps hard in the top position because as you reach
 the top of the curl, the bar moves horizontally in toward the chest, which reduces the resistance placed on the biceps.


Rx: Keep the resistance maximized on the biceps in the top position of the barbell curl by attaching one end of a strength band to each end of the barbell. Stand on the middle of the bands as you perform barbell curls and feel the maximum tension on the biceps in the top position of the curl.