Published October 20, 2025 01:37PM Back in 2019, scientists proposed a new theory of endurance. For efforts lasting more than about a day, they suggested, the ultimate limit is dictated by how much food you’re able to digest. Your heart and mind and muscles can adapt to do amazing things, but they all need fuel. The most calories you can …
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DEAR DR. ROACH: I am a 64-year-old male who is a lifelong endurance athlete. For the past 15 years, my primary activities are cycling and swimming. I work out around 10 hours a week now, so it’s nothing really excessive. But I always push myself to the edge of what’s a comfortable pace. My lifelong cardio exercise enthusiasm has resulted …
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When it comes to phones, battery life is one of the top preferences when making a buying decision, and this year Apple finally seems to have nailed it with the iPhone 17 Pro Max. On paper, Apple promised more endurance, but in real-world tests, the phone actually delivered. The bigger battery, better cooling, and that new A19 Pro chip all …
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Scientists have uncovered a genetic variant, inherited from Neanderthals, that may limit athletic performance. The mutation is thought to affect roughly 8% of modern-day Europeans and influences the activity of a key enzyme in the production of energy in skeletal muscle. In a study published July 10 in the journal Nature Communications, researchers analyzed more than 2,700 individuals, which revealed …
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