Intermittent fasting by age chart to help you fast smarter, not harder

At 25, you skip breakfast, crush a spin class, and somehow survive on iced coffee and hope. At 45, the same routine leaves you foggy, ravenous, and wondering if your metabolism died in its sleep.

The reality is, your body has moved on from the fast-all-day, glow-all-night nonsense that once sort of worked. Metabolism slows, hormones riot, muscle becomes stubborn, and fasting, when done like you’re still in your twenties, starts to backfire.

That’s why turning to the intermittent fasting by...