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The problem with losing weight without exercising is that it's not only fat but also muscles that are lost.

• thefz 2y ago
  Mostly bullshit as fat is the primary source for energy in the body and hard to earn protein are not. It's a myth mostly, do fast, do exercise, you will not lose muscle.
  • nradov 2y ago
    Fat is only the primary energy source at lower output levels. As power output increases, metabolism shifts increasingly away from fat and towards glycogen. The shape of that curve is different for everyone, but ironically the people who most need to lose fat typically have the least ability to metabolize fat (not fat adapted) and so with any exercise they're mostly running on carbs. Once the glycogen stores run low then their bodies start burning protein as well, even though it's less efficient. Muscles will also just atrophy if not used, regardless of diet.
    • thefz 2y ago
      So you are proving wrong the reply that I prove wrong. Ah, this site sometimes.
• sudosysgen 2y ago
  That's very true, but if you have healthy hormone levels and so long as your body fat percentage is high, you will lose way more fat than muscle, even without exercise. In bariatric surgery patients, for example >70% of weight loss is fat on average, and for 2/3rds of patients in some study there is less than 15% loss in fat-free mass. On the other hand, if you're a man, then going to a reasonable body fat percentage is likely to make it easier for you to gain muscle. So, as long as you make sure to eat a lot of protein, unless you have a large caloric deficit, you can expect muscle loss to be minimal (studies show that for extended moderate caloric deficits, muscle protein synthesis doesn't really decrease) So yes, but if you're overweight, it's still a very good change on the balance, and you'll be way more fit in the end even if you do lose a bit of muscle.