heavy curls/ light concentration curls ???

[bubblehead]

I know heavy curls builds bulk in the bicep but would doing light concentration curls build up the bicep peak vs. doing it heavy work faster????????????? any help ???????????

[taiboxa]

peak is genetic
i use heavy year round unless i was going to compete in a comp
then 10-12 weeks out i would start w/ more isolative movements

[Testsubject]

If you want big muscles you gotta lift big weight. Light weights arent gonna do shit for you.

[FullMoonHowlingWolf]

Tiaboxa is correct, because regardless of how many heavy sets of concentration curls that you perform over the years, you will not build Everest-peaked biceps unless you have the hereditary predisposition to possess such a high-peaked biceps, hence genetics.