army1987 comments on The Unfinished Mystery of the Shangri-La Diet - Less Wrong

22 Post author: Eliezer_Yudkowsky 10 April 2009 08:30PM

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Comment author: [deleted] 25 March 2012 11:24:28AM *  0 points [-]

[weightlifting] is the most time-efficient way of affecting your weight through exercise

Affecting it upwards, you mean. The goal of body builders wasn't exactly to become skinnier last time I checked. (The caveat is that muscle is denser than fat, so if you gain muscle while keeping your total weight constant you'll look skinnier.)

Comment author: wedrifid 25 March 2012 12:43:23PM *  4 points [-]

[weightlifting] is the most time-efficient way of affecting your weight through exercise

Affecting it upwards, you mean.

No, downwards. For anyone with a significant amount of fat and underdeveloped muscles.

The goal of body builders wasn't exactly to become skinnier last time I checked.

It usually isn't. Yet this is not incompatible with body building being an efficient form of weight loss.

Comment author: TheOtherDave 25 March 2012 04:09:44PM 2 points [-]

I don't understand how eliminating fat in this scenario merely makes me merely "look skinnier" rather than actually being skinnier. Constant mass + increased density = reduced volume = (in this case) skinnier... doesn't it?

Comment author: [deleted] 25 March 2012 07:02:12PM *  1 point [-]

I was using skinnier as a one-word shorthand for ‘less heavy’, but you're right that a volume-based definition is closer to the common understanding than a mass-based one. (Cf massive which is also about mass in technical speech but about size in colloquial speech, though for a different reason.)

(Plus, in most cases of people trying to lose weight, they would actually care more about fat mass than total mass if they fully understood the difference and could measure both.)

(In Italian we have a phrase falso magro lit. ‘false lean [person]’ for people who weigh more than one would guess by looking at them.)

Comment author: gwern 25 March 2012 10:28:52PM 1 point [-]

(In Italian we have a phrase falso magro lit. ‘false lean [person]’ for people who weigh less than one would guess by looking at them.)

But... wouldn't that make them truly lean? Or falsely fat?

Comment author: [deleted] 26 March 2012 03:45:31PM *  0 points [-]

Dammit... I meant “more than one would guess”. Fixed.

Comment author: Swimmer963 25 March 2012 11:18:28PM 0 points [-]

Also, a person with lots of muscle definition won't look "fat" even if they weigh much more than average. They won't look skinny either, but large-and-muscular is generally considered healthier and more attractive than large-and-flabby.

Comment author: wedrifid 25 March 2012 04:20:49PM 0 points [-]

I don't understand how eliminating fat in this scenario merely makes me merely "look skinnier" rather than actually being skinnier. Constant mass + increased density = reduced volume = (in this case) skinnier... doesn't it?

The parenthetical distinction was between 'losing weight' and looking (and even being) skinnier. ie. Gained weight, lost volume and subjectively appear to have lost even more volume.

Comment author: Nornagest 25 March 2012 10:55:18PM *  1 point [-]

Affecting it upwards, you mean. The goal of body builders wasn't exactly to become skinnier last time I checked.

Bodybuilders generally aim to build muscular mass through a cycle of high-intensity workouts under high-calorie conditions alternating with near-fasting (along with some even sketchier practices), but that doesn't say much about weight training in general; modern bodybuilding is incredibly specialized and has little to do with any kind of athletics.

By varying diet and the conditions of training, it's possible to use weights to increase endurance, build muscle mass, burn fat, or build strength, and while these all overlap to a certain degree they're not really all that strongly linked. An exclusive focus on one will tend to improve that one much faster than the others.