Re: Bicep peak question
Preachers have been mentioned as good for peak, but look at Larry Scott's biceps, they are extremely full, but don't have great peak and he practically made the preacher curl famous.
I would have to say genetics is the main factor.
James 1:16-17 ESV
Do not be deceived, my beloved brothers. Every good gift and every perfect gift is from above, coming down from the Father of lights
With God's help...Mens sana in corpore sano