Questions

Are there really some muscles which are harder to train? Which ones?
Why?

No matter how hard you work out your arms, they'll never be as big as
your legs, because the muscles involved are different types, "white"
and "red" fiber??

Some muscles -- like the delts or calves -- are shaped even more by
genetics than by training compared to other muscles, like biceps and
triceps?

Some muscles -- like abs -- recover faster and so should be exercised
with very short rest periods (mere seconds, like ten)? Some muscles
-- like those digital flexors worked by wrist curls -- can be worked
on every day?

Are muscles like .mp3 players: they never really go totally out,
there's always some energy left, but they will stop working
nonetheless, at a certain point, while reserving just enough energy
for "household chores" (in the case of .mp3 players, they stop playing
music but have enough juice left to maintain the time and date and
display a message that they're outta juice; in the case of muscles,
they will not lift another rep, but still have juice to pick up a
solid gold bar if one were around)???

"Prisoner at War" <prisoner_at_war.TakeThisOut@yahoo.com> schreef:

> Some muscles -- like abs -- recover faster and so should be exercised
> with very short rest periods (mere seconds, like ten)?

The abs are usually trained with low intensity.

> Some muscles -- like those digital flexors worked by wrist curls -- can be
> worked
> on every day?

Try 85% 1RM for multiple sets and see what happens.

--
Pete