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Just from my own experience, I wonder if a lot of the benefit of such things is simply from habitually paying attention to your body, whether your lifting technique, or your breathing.

Lifting works faster. Trying to change your posture by noticing and correcting it is just brutally difficult. You need to mindfully check in multiple times an hour. Lifting you only need to attend to your posture while you’re doing it and your posture will improve without conscious effort as your tendons and sinews stretch and you get more muscle. Running or dancing will do the same thing but the returns on each hour of work are going to be lower than for lifting weights.

I'll add an endorsement for lifting, especially as part of cross-training for another sport to avoid injury.

I am also extremely partial to sprinting. The closest you can come without drugs to a certain type of very lean and muscular physique is to combine lifting and sprinting. Sprinting is great for your abdominals, quads, calves, so it can really balance out the bulky, top-heavy look that can come from only lifting.

Can you recommend a sprinting regimen?

I’ve been lifting weights for 15 odd years, and while I agree with you, it’s not always a magic bullet.

After a period of excessive work (slumping in a chair for 18 hours a day), combined with a sports injury, I ended up with a very messed up posture. Lifting weights actually exacerbated the issue, rather than fixing it.

Lifting is also one of the most efficient ways to stretch. The only thing to know is the you should always do the motion with a full range of motion (ROM). Full ROM is actually best for making muscle, but if you also do it with a your bodyweight on your back, it's practically THE perfect stretching exercise.

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