You have responded so respectfully. Appreciate your well drafted messages.

Range of motion and stretch are key to building muscle. Core muscles are no different than any other muscle. You wouldn’t build chest or quads effectively by holding an isometric lift, why apply this to abs?

Beyond absolute noobs who can’t hold a plank for 1-2 minutes, I feel it’s a bad exercise. Once you can hold it for 2 mins there’s no point. It’s a ton of effort and you get a good burn, but you’re not going to build muscle or strength for the aforementioned reasons.

Of course, do whatever works for you. For me? Absolute shit tier exercise, almost anything else is an improvement. Perhaps we’re talking about different goals here, though.

I’m 6’3”, in my 40s, and no lower back pain despite being on the computer most of my life, so I feel I’m doing something right with regards to back health.