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To me, strength training is all about making life past your 60s suck less. It's a savings account for your body; put in the work now so that you _might_ continue to be active and mobile at 80. It also helps make you look good without having to eat like a bird, which is nice also.

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> vigorous weightlifting for 1 hour may burn up to 440 calories

nah, you still have to eat like a bird.

You’re not considering that the more muscle mass you have, the higher your Basal Metabolic Rate (BMR), which means you burn more calories passively by just existing, let alone what you burn during exertion and recovery.

BMR changes by how much, exactly? it's useful to show some numbers, as a rule of thumb, not just throw something out there.

Sure, if you want to stall early and make no progress.

You have to eat more to lift more.

Doesn't mean you have to go full NFL Combine mode and eat 7000+ calories/day. But 1800 cals/day won't cut it (unless you are trying to cut weight, wherein progress will stall for a while).

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