My Dad never lifted a day in his life.
I should rephrase that somewhat.
My Dad never lifted a barbell, dumbbell, used a Hammer Strength, an ISO-lateral, or pulley system.
He wouldn’t know a barbell row from a barbell shrug.
He was in The U.S. Army so I imagine that he did have to put in some road work, but exercise in the classic sense was never very important to him.
He was and actually still is an avid outdoors-man, who has probably walked tens of thousands of miles in his time. He still to this day at 71, will chop wood, uses a wood-burner, and carries wood into his basement to save money on fuel costs.
Hard work always reveals itself.
Above is two pictures, the first my Dad just a day or two ago, the second myself after a serious German Volume Training session of pull-ups.
Genetically, I have been blessed in terms of forearm potential.
You most likely have a body-part that just grows regardless of the type of stimuli you create.
I think it is important to go with those strengths, but also to use a trick that Arnold used as he became the very best and most recognized bodybuilder in the world.
Expose your weakness.
Initially, believe it or not “The Oak” had very poor calves.
He decided the very best course of not only action, but also accountability, was to expose this weakness for everyone to see so that through time he would be forced to either accept this inadequacy, or through finesse improve upon it and make it a strength.
He wore shorts everywhere so that the world could see his inept calves.
Needless to say, this inspired him to work unbelievably hard and bring up this body part, so that eventually it was no longer a weak-point, but actually became a strength.