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Scientist busts myths about how humans burn calories

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Re: Scientist busts myths about how humans burn calories

#371

Post by impjohn »

jniedrauer wrote: post #110
KennyBlanken wrote: post #94

Earlier quoted context omitted.

A few hours on my bike can be 2,000-3,000 additional calories over base metabolic rate. That's not based on made-up calories but actual work from a power meter on the bike. "You can't exercise your way out of a bad diet" - literally not true for a fuckton of endurance-sport athletes for whom the challenge is eating enough calories. It's 100% true for people who think exercising for 30 min means license to eat whateve…

One of the cruel aspects of endurance sports is that they suppress your appetite. You can go out and burn 6000 calories in one race, spend the whole time thinking about all the delicious food you're going to reward yourself with, and then you get there and have zero desire to eat. You sometimes can't even start refeeding until the next day.

Feels to me like pushing your body to extremes is akin to a metabolic shock and your system rebooting in another operating mode. Probably needs another reboot to go into regular mode, so your apetite will also vary in the meantime

Re: Scientist busts myths about how humans burn calories

#372

Post by blitzar »

fredophile wrote: post #222
MichaelBurge wrote: post #167

Earlier quoted context omitted.

Is it known if the meat causes people to die sooner, or is it just that people who are vegan are correlated with people who care about their health so they do other things that cause the 10 year effect? I feel like a non-lethal poison like a flea killer or something would cause a 10 year lifespan drop, so it would be surprising if meat were as deadly as flea killer poison.

I'd guess the lack of processed foods is a big part of it. Until recently if you were vegan you pretty much had to make everything from scratch. I'd also guess that the average vegan is more health conscious than the average meat eater.

When compared with the SAD standard american diet, any diet intervention (short of eating double portions of the SAD) is going yield positive results.

Re: Scientist busts myths about how humans burn calories

#374

Post by artdigital »

pawelmurias wrote: post #366
dahart wrote: post #4

> “You can’t exercise your way out of obesity,” […] “you can’t outrun a bad diet.” While this article is being a bit dramatic and possibly understating the impact of exercise slightly, I feel a little dumb that I didn’t know this earlier. It took me several decades too long to understand the obvious, that exercise is for building strength, and losing weight happens by eating less. I tried for way too many years to ex…

You can totally loose weight by exercising, it's just regular people don't exercise hard enough. If you do pro athlete levels of exercise it will start affecting your weight a lot.

Well you can, but only if the exercise is putting your calories under your TDEE. Sure there are slight body changes ongoing if you exercise enough (recomp) while staying on your normal intake, but basically

- Calories over TDEE: You gain weight

- Calories under TDEE: You lose weight

It's that simple

Re: Scientist busts myths about how humans burn calories

#375

Post by aixi »

Elte wrote: post #321
y4mi wrote: post #266

Earlier quoted context omitted.

And yet the article you're commenting on says that you don't burn more calories by exercising... If it is true, it definitely changes the narrative.

I'm a bit confused by this point in the article, because it also states: > There seems to be a hard limit on how many calories our bodies can burn per day, set by how fast we can digest food and turn it into energy. He calculates that the ceiling for an 85-kilogram man would be about 4650 calories per day. Given that "regular" people clearly do not burn 4650 calories per day, and it is possible to burn 4650 calories…

out of context, that quote is really funny; what happens once you reach 4650 calories? you start violating the rules of thermodynamics?

(i know your body starts compensating for it and burning less calories, but still)

Re: Scientist busts myths about how humans burn calories

#376

Post by ajuc »

hdjjhhvvhga wrote: post #360
ajuc wrote: post #192

Earlier quoted context omitted.

Yes counting calories is essential, I had very similar experience (walk 10 km on the weekend ~= burn 600 kcal, then buy a 1000 kcal snack on the way back and wonder why I'm not losing weight), but still the exercise makes a big difference. Last year in march I started counting calories, recording my weight and all exercises I did and walking/biking every day. I lost 30 kg, walked 2100 km, biked 1000 km, and the sum o…

> the sum of calories burned by all exercise was about 160 000 I believe you meant kilocalories

Yes, sorry. kcal not cal.

Re: Scientist busts myths about how humans burn calories

#377

Post by dTal »

ajuc wrote: post #192
dahart wrote: post #4

> “You can’t exercise your way out of obesity,” […] “you can’t outrun a bad diet.” While this article is being a bit dramatic and possibly understating the impact of exercise slightly, I feel a little dumb that I didn’t know this earlier. It took me several decades too long to understand the obvious, that exercise is for building strength, and losing weight happens by eating less. I tried for way too many years to ex…

Yes counting calories is essential, I had very similar experience (walk 10 km on the weekend ~= burn 600 kcal, then buy a 1000 kcal snack on the way back and wonder why I'm not losing weight), but still the exercise makes a big difference. Last year in march I started counting calories, recording my weight and all exercises I did and walking/biking every day. I lost 30 kg, walked 2100 km, biked 1000 km, and the sum o…

What the heck kind of "snack" is 1000 kcal?

Re: Scientist busts myths about how humans burn calories

#378

Post by artdigital »

rob74 wrote: post #349
ajuc wrote: post #192

Earlier quoted context omitted.

Yes counting calories is essential, I had very similar experience (walk 10 km on the weekend ~= burn 600 kcal, then buy a 1000 kcal snack on the way back and wonder why I'm not losing weight), but still the exercise makes a big difference. Last year in march I started counting calories, recording my weight and all exercises I did and walking/biking every day. I lost 30 kg, walked 2100 km, biked 1000 km, and the sum o…

Congratulations! I would be happy to lose "only" 10 kg (hell, 5 kg would be good for a start), but since Covid and home office my weight has been (slowly, but steadily) going in the wrong direction. Yeah, you can and do burn calories by exercising, but it's depressing how little it is. And it's also depressing if I look at the graph that some 40 to 50 year olds seem to still have the metabolism of a toddler - I'm def…

My advise: (as someone who does a lot of working out and calorie control)

Write down what you eat for a while and its calories. Weigh yourself daily as well and write that down too. If after a week your weight went up: Your calories are above your TDEE. If it went down: Your calories are under your TDEE.

And that's basically it, once you know what your TDEE is, eat under it to create a caloric deficit and you will lose weight. Even if you don't exercise at all and just sit at home.

Sure exercise will help putting your caloric deficit lower by burning some, but in the end it's always calories vs TDEE. Understanding that makes it very easy to go in either direction (gain weight vs lose weight), no matter what your metabolism is

(The easy solution is of course to just eat less, like skipping a meal or reducing the amount. Since your average daily food is already what dictates your current weight, reducing it means you will lose weight)

Re: Scientist busts myths about how humans burn calories

#379

Post by artdigital »

dTal wrote: post #377
ajuc wrote: post #192

Earlier quoted context omitted.

Yes counting calories is essential, I had very similar experience (walk 10 km on the weekend ~= burn 600 kcal, then buy a 1000 kcal snack on the way back and wonder why I'm not losing weight), but still the exercise makes a big difference. Last year in march I started counting calories, recording my weight and all exercises I did and walking/biking every day. I lost 30 kg, walked 2100 km, biked 1000 km, and the sum o…

What the heck kind of "snack" is 1000 kcal?

Cinnabon comes to mind

Re: Scientist busts myths about how humans burn calories

#380

Post by aixi »

throwaway09223 wrote: post #206
nradov wrote: post #183

Earlier quoted context omitted.

Most people can't manage to burn 1000 kcal in a 60 minute workout. I am a large man in fairly good shape and have to put in a pretty hard effort to hit those numbers. People who are smaller or not well trained are going to be significantly lower. Measuring stationary bike workouts in terms of mph is kind of meaningless. What actually matters is the measured power output based on the resistance setting.

I'm a 40 year old guy who's been sitting behind a desk writing software for two decades. I was in good shape in my 20s but haven't exercised significantly in a very long time. It took me about three months to get up to that speed, cycling every other day. I started out doing 10 miles, at 10mph. Three months isn't all that long for an exercise program.

same here, I'm in my late 20s and was generally unhealthy because of the pandemic, and I burn 630-700 calories per 30 minutes worked out
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