today we’re tackling one of the biggest lies in the fitness industry the idea that your metabolism just magically dies as you get older. Spoiler alert: it doesn’t. At least not until you hit around 60–65 years old. And I’ve got the PubMed research to back it up. So if you’re in your 30s, 40s, even 50s blaming age for your struggles  buckle up, ‘cause this one’s gonna sting a bit