I don’t know that it’s
physiologically necessary, but doing one “warm-up” set of each new/proceeding exercise helps me focus for the work to come in that movement.
An old-timer taught me that years ago, and it’s something I’ve done since.
Even with something like preacher curls and pec-decks, a light warm-up set indicates if the pads & other settings are adjusted properly, before using a weight that could cause you some
serious damage.
A warm-up set also tells me if anything’s wrong with
me before I use heavier weight.
Skull-crushers, for instance - if my elbow hurts that day, I’d rather realize it on my 225 lb. warm-up before throwing on the 405 that I
(and most Getbiggers) use.
