Ive learned that in tournament golf, for me anyways, its the Downstroke Shoulder Turn Lag (Maximum Trigger Delay of #4) that is the first thing to go when I get tense. As if the tension builds first in my arm to shoulder connections and so I try to breath and relax in the upper arms and shoulders and then feel the Lag loading at the #4 Pressure Point. Its a good trick when you need a long drive instead of tensing up to give it a whack or if its cold out too, I find.
Homer did say "lag in all of its forms". Its not just that singular #3 pressure point or left hand wrist cock.