JiminyJones
Registered
I've always performed DB shoulder presses with a full range of motion, going all the way up and then all the way down:
Yesterday a trainer at my gym told me only to lower my arms until they reach 90 degrees, which is much easier, but the trainer says that doing any more than that is useless. Is he right? Should i start doing it like he said or should i keep on doing it like the exrx example shows?

Yesterday a trainer at my gym told me only to lower my arms until they reach 90 degrees, which is much easier, but the trainer says that doing any more than that is useless. Is he right? Should i start doing it like he said or should i keep on doing it like the exrx example shows?