A new study suggests the commonly recommended “fat-burning zone” on commercial exercise machines may not accurately reflect the heart rate at which an individual burns fat most efficiently.
A long-running Swedish study has followed adults for nearly five decades, uncovering when physical decline truly begins. Fitness and strength start slipping around age 35, then worsen gradually with age. The encouraging twist: adults who began exercising later still improved their physical capacity by up to 10 per cent. It’s a powerful reminder that staying.
