r/isometric_fitness

The neck is the most obvious one, but what about things like external rotation for the rotator cuffs and clenching the jaw?

I was watching some content on getting to or close to failure, and I am trying to understand how or if this even correlates to overcoming isometrics.

Failure is not being able to move a fixed weight, but with isometrics we are never moving any weight. What is the equivalent of isotonic failure in the isometric world? Are we always reaching failure as long as we are theoretically producing the most force possible for as long as possible?

I am interested in being able to pin this down because it can be difficult to know when enough is enough, for a certain workout/exercise, without simply tracking weights over time.

Edit: I did the research I should have done before I posted. I guess RDR, Repetition duration reserve, is the CNS equivalent of muscular failure... so from 3-10 sec, one has basically used up 100% RDR.

Been lifting for a while and I keep noticing something odd — the things that actually work for me don’t really match most programs I see online.I don’t change my routine much at all. Same exercises, same order, every session. I know people say you should rotate stuff more, but I actually progress better when I just keep it consistent.Also don’t really chase a “perfect” split anymore. It’s usually just heavy low reps or machines, nothing too fancy.And I end up using machines more than free weights these days, mostly because it’s just easier to repeat and track.It’s probably not optimal on paper, but it’s been working.Curious what “wrong” habits you guys have that still somehow work for you?