Kinda. It can help grip strength a lot, or at least holding weights in that way can. But its not a grip strength exercise. Deadlifts, barbell/dumbell shrugs, farmers carry, curls, etc.. stuff like that can all help improve grip strength while not being the primary goal of the exercise.
Any sort of exercise that removes the thumbs and metacarpophalangeal joints from the equation, if you can close your hand, lock your grip and hang off of your skeleton you'll only add so much to your grip. There are actual crimping blocks and rolling handles you can attatch to weights to strengthen your grip.
Emil Abrahamsson seems to think that hangboarding is the answer to this problem, he suggests holding a hangboard without lifting your total weight off of the ground on the smallest ledge you can manage, twice a day, every day, to turn your grip into iron. He recently beat a lot of pound for pound grip championship records so I think his training techniques are worth paying attention to.
That being said, climbing itself might be the answer since these elite dudes routinely hang off of the absolute tips of their fingers while lifting their bodies up a wall and even for someone who can deadlift a shitton getting used to lifting your weight on crimps takes months to achieve.
It's also worth saying that you have very few muscles in your hand and grip strength is more a game of strengthening tendons and ligaments, which takes a lot longer than strengthening muscles, which might be why one of the guys with the most world records in grip strength right now is 70+ years old.
I assume all parts are heated first because that's how you ensure it's sterile. It also serves to make a slight vacuum once cooled which will keep everything sealed.
If you want to reuse the lids, you can just pry the lid a little and let the pressure equalize. That way there is no dent and sealing it again will work properly.
Yeah, I know the other tricks like running warm water or tapping the edge, and those are fine. But honestly use your arm instead of your wrist and most jars pop open. Torque that thing!
It's because you're not using the same muscle groups. Simply set the pickle jar on the ground, put your power foot on the jar, grip the lid, and heave with your entire lower back and glutes in the open direction
Stick the tip of a spoon under the lip of the lid and push the handle towards the jar. That should open a little gap that releases the pressure inside the jar and it'll open pretty easily then.
They are hard to open due to a vacuum seal. So just take a very small flathead screwdriver and put it under the lid, and apply a small amount of upward force to break the seal. The jar pops, releases the pressure, and now a toddler can open it. I use the nail file on my pocket Leatherman. Works every time.
All these people are complaining about how hard it is to open a jar, and I'm sitting here scratching my head because the only times I've ever struggled with jars was after someone closed them too tightly. Just don't use a death-grip when you're closing your jars and you'll be fine unless you're elderly or something.
When my mother was still around, any time I tried to open a jar after she'd gotten to it, I would destroy my hands and still not be able to get it open. I could wreck tendons, give myself blisters, try all the tricks mentioned in this thread, and those lids wouldn't budge. It was like she found a way to weld metal to glass with her bare hands. By comparison, opening the factory seal was no effort at all.
It depends tbh, I am a (late?) teen, and when I started, I couldn’t even bench a bar without hurting myself, I can now bench 140, I am proud of it but it will probably be very unimpressive for someone who started at 90
I'm going to disregard the original comment because a lot of factors are going into the impressiveness and everyone's body is different, but you can't really compare your flat bench progression with your deadweight lifts accurately to gauge progress. Either way, progress is progress and congrats on your gains friend!
Bro I'm in the same boat as you, I just started lifting about a month and a half ago and I could barely move our Olympic bar, now I'm moving weight I literally thought I'd never touch. It's still laughably low for anyone who's been moderately athletic/ strong their whole lives but it starts somewhere right?