Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Thinking hard burns almost no calories but destroys your next workout

vo2maxpro.com

Post reply on HN
Print view View original

121–130 of 151 posts

Re: Thinking hard burns almost no calories but destroys your next workout

#121

Post by wasmitnetzen »

vbarrielle wrote: post #82
wasmitnetzen wrote: post #63

Earlier quoted context omitted.

How can you know this "as a matter of fact"? Because your not-a-healthcare-device sportswatch tells you so?

Not running, but in cycling we have power meters, and some workouts (eg 2 x 20' threshold) will definitely burn in the range of 800 calories in an hour. The energy measured by the power meter for this workout is 800 kJ for me (my threshold being around 260W). Now it turns out the conversion factor from kJ to calories is 1/4, but the body is only 25% efficient when producing calories for cycling, meaning one has to bu…

I'm not arguing that your body burns that much energy, that follows from the first law of thermodynamics.

But whether that means that your body will have a calorie deficit of that same amount, that is much harder to prove.

Re: Thinking hard burns almost no calories but destroys your next workout

#122

Post by mfro »

fud101 wrote: post #19
hpdigidrifter wrote: post #12

Earlier quoted context omitted.

Creatine ruins my sleep Find myself getting up multiple times a night to pee. Even once is rare unless I've been out drinking for the night.

That's interesting. I'm having the same problem. I usually have it after my workout in the evening. Should I try moving it to earlier in the day?

I take it first thing in the morning and only have this issue early in the day. I don't know if that has some effect on its efficacy but it is more convenient for me.

Re: Thinking hard burns almost no calories but destroys your next workout

#123

Post by ap-hyperbole »

evanjrowley wrote: post #112

Balancing health while being productive as an average adult seems like an impossible equation today. Many people tell me I need to lift weights to lose weight. On mornings when I actually put in real effort, I pay for it with a significant cognitive performance penalty for the remainder of the day. I want to do nothing more than sleep an hour after a workout, which is bad timing, because that's when I need to clock i…

> Many people tell me I need to lift weights to lose weight.

No you dont. Exercise does help, and has many other benefits but is not the main driving factor for losing weight. Diet is by far the most important one. Calories intake vs expenditure is the only thing you need to worry about if your primary goal is weight loss.

Re: Thinking hard burns almost no calories but destroys your next workout

#124

Post by bitshiftfaced »

darthbanane wrote: post #4

Was expecting the article to mention creatine which interacts with ATP. It's a supplement that's so well studied that almost everyone should take it, even if you don't workout at all. In my experience it has helped tremendously with mental endurance (n=1 but there are some studies that support it, especially in older people with cognitive decline).

> that almost everyone should take it

I can see why every vegetarian should take it. But if you eat meat regularly, your creatine stores will be at a level where you'd probably only see a cognitive benefit at times of sleep deprivation. But if you're regularly sleep-deprived, then you'd do best by addressing your sleep issues.

Re: Thinking hard burns almost no calories but destroys your next workout

#125

Post by misja111 »

ludwigvan wrote: post #93
misja111 wrote: post #79

I have noticed that the reverse is also true: a heavy workout makes it more difficult to think hard afterwards.

I am also interested if this is the case. Anyone have any scientific evidence for this?

I guess it's the same principle, an excess of adenosine in your brain because of the mental strain you put on yourself during the workout.

Re: Thinking hard burns almost no calories but destroys your next workout

#127

Post by EPWN3D »

evanjrowley wrote: post #112

Balancing health while being productive as an average adult seems like an impossible equation today. Many people tell me I need to lift weights to lose weight. On mornings when I actually put in real effort, I pay for it with a significant cognitive performance penalty for the remainder of the day. I want to do nothing more than sleep an hour after a workout, which is bad timing, because that's when I need to clock i…

Exercise is a magic pill in every sense except for losing weight. That's almost entirely controlled by your diet.

If you're exercising to lose weight, you're probably thinking that more exercise means more weight loss, which means that you could be overtraining.

I recently got a second Apple Watch to wear to bed to track my sleep, and it's given me some really great insights into when I'm hitting the red zone and need to dial back training. For exercise, more intensity is not always better. What matters is consistency, not consistently high intensity.

Re: Thinking hard burns almost no calories but destroys your next workout

#128

Post by throwaway-11-1 »

diogenes_atx wrote: post #120
evanjrowley wrote: post #112

Balancing health while being productive as an average adult seems like an impossible equation today. Many people tell me I need to lift weights to lose weight. On mornings when I actually put in real effort, I pay for it with a significant cognitive performance penalty for the remainder of the day. I want to do nothing more than sleep an hour after a workout, which is bad timing, because that's when I need to clock i…

Something else you might try is changing your diet. After I became a vegetarian and eliminated refined sugar and excess sodium from my food, my health improved, as well as my sleep. I am no longer pre-diabetic. And the food that I eat is wonderful, many different ways of preparing beans and lentils for protein instead of meat.

I couldn’t believe how much more alert and awake I would feel after lunch when I quit meat and dairy. Also highly endorse avoiding refined sugar and reducing sodium. Wish I had switched to this diet earlier in life

Re: Thinking hard burns almost no calories but destroys your next workout

#129

Post by perching_aix »

h33t-l4x0r wrote: post #62
raincole wrote: post #53

Earlier quoted context omitted.

Don't know what's here to 'lol' about chess. Are you implying chess isn't cognition intensive?

Why would it be more than any other activity that involves making decisions?

That's not what they are suggesting?

Re: Thinking hard burns almost no calories but destroys your next workout

#130

Post by rKarpinski »

evanjrowley wrote: post #112

Balancing health while being productive as an average adult seems like an impossible equation today. Many people tell me I need to lift weights to lose weight. On mornings when I actually put in real effort, I pay for it with a significant cognitive performance penalty for the remainder of the day. I want to do nothing more than sleep an hour after a workout, which is bad timing, because that's when I need to clock i…

> People tell me that I'm over training, which is ridiculous, because anything less would be easy and contravene the purpose of the workout.

This doesn't mean you aren't over training.

If it's strength training... Without knowing the specifics what you are describing sounds like too much volume (and training for hypertrophy). Lower reps (3-5) & higher weight will have more of a strength stimulus and be less taxing.

If it's cardio... you probably should be at a lower intensity and going for longer.

Post reply on HN