David Sinclair's lab mice are not fat, and they are not aging fast either.
The Harvard longevity scientist tells Lewis comfort might be the thing quietly killing us.
Constant food. No exercise. Never getting cold. All of it speeds up how fast the body breaks down.
His research found something stunning. Calorie restriction alone can slow aging enough to add fifteen, maybe twenty five years.
Lewis has his own proof it works outside a lab. A freezing hike up a mountain, wind whistling at sixty miles an hour, hands going numb through frozen gloves.
He calls it life changing.
Turns out the mind matters as much as the body here. What gets said out loud on that climb can decide whether the body pushes forward or shuts down.
Discomfort, on purpose, might be the closest thing to a fountain of youth.
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