yep fiber make up is the jist of it.
fast twicth fibers respond well to heavy weights these are normally found in the upperbody especially in the back which it why it responds best to heavy weight and powerful quick motions
while slow twicth fibers respong better to higher reps and longer...
Hey wassup board
im new here but def not new to the iron game
im a member of a few other boards so im not a newbie in a since i know the rules and guidelines so no need to scream at me to use the search function, i know......lol
but yeah just making myself known ill be here posting and...
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