Talks to Watch

The '5kg in 50 days' Diet!

205K views · Jul 16, 2017 · 25:22 · 0 HN recommenders · 4 mentions · discussed 2021–2025

Thunderf00t applies a simple energy mass balance to weight loss, showing how much exercise is needed to burn off extra calories compared with eating less. He concludes that cutting intake is the easier route and that hunger fades after the first week.

Why Hacker News points people here: HN cites it in arguments that exercise alone is an ineffective way to lose weight and that caloric deficit matters most.

What Hacker News said 4

Cites itairhead969Mar 2021

“you can never outrun your fork”

Argues exercise is ineffective for weight loss.

Full comment

Caffeine is performance-enhancing, raises metabolism (temporarily), and suppresses hunger. Unfortunately, it's readily-apparent that you can never outrun your fork, so forget about "burning calories" through cardio. The goal of fitness to lose weight ought to be weightlifting to gain as much muscle mass as possible to raise one's BMR. Passive metabolism is about the only way to do it without enrolling in BUD/S. In general, gymrattery and endless treadmill running are wasted effort. this video

in “Drinking strong coffee before exercising increases fat-burning, new study finds” · view on HN
Cites ithi-v-rocknrollApr 2024

“Caloric deficit is the best primary way.”

Caloric deficit beats exercise for weight loss.

Full comment

Just don't try to lose weight primarily through increasing activity. Activity is great for other reasons, but the human body is just too damn efficient and it would consume too much time. Caloric deficit is the best primary way. The '5kg in 50 days' Diet! (2017) this video

in “Exercise, metabolism, and weight: New research from The Biggest Loser (2022)” · view on HN
Cites ithi-v-rocknrollAug 2024

“It's largely ineffective to lose weight by exercising, and so much easier to reduce caloric intake.”

Supports claim that exercise is ineffective for weight loss.

Full comment

Yep, it's basically a distributed gym membership without the gym except for a single expiring, proprietary widget that lives on your property. It's largely ineffective to lose weight by exercising, and so much easier to reduce caloric intake. this video

in “Peloton to charge $95 activation fee for used bikes” · view on HN
Cites itburnt-resistorMay 2025

“Thunderf00t did a video on this.”

Caloric restriction beats exercise for net deficit.

Full comment

Dangerous, inefficient, and time-consuming compared to moderate exercise and eating less. Caloric restriction is, by far, more effective than exercise for net deficit. Thunderf00t did a video on this. this video

in “Why walking is the most underrated form of exercise (2017)” · view on HN