Your body actually prefers to catabolize muscle over fat when calories are restricted because: Muscle is metabolically expensive (burns calories at rest) Your body "wants" to reduce calorie expenditure Evolutionary survival mechanism (preserve fat, reduce muscle) Gets worse as body fat drops below 12-15% for men, 20-25% for women The typical cutting disaster: Week 1-4: Lose 8 pounds (6 pounds fat, 2 pounds muscle) Week 5-8: Lose 6 pounds (4 pounds fat, 2 pounds muscle) Week 9-12: Lose 4 pounds (2 pounds fat, 2 pounds muscle) Result: Lost 18 pounds total, but 6 pounds was muscle You're lighter but not necessarily leaner Strength dropped significantly Metabolism crashed This is where most people fail
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HSF1 and HSPB1 knockdown promotes erastin-induced ferroptosis, but heat shock preconditioning and HSPB1 overexpression prevent erastin-induced ferroptosis