Quick win: 16 hours of laser focus

Let's talk brain fuel. When you fast for 16 hours, your body starts producing BDNF, a protein that supports brain cell growth and repair. Your brain also begins running on ketones, which gives you steadier, cleaner energy than sugar spikes. That's why so many people feel sharper, not sluggish, during a fast.

Here's how to try it: (1/3)

1. Start eating at noon
2. Stop eating by 8 PM
3. Black coffee or tea only in the morning
4. Do your hardest thinking between 9 and 11 AM
5. Drink water with electrolytes while fasting

After two weeks, some people extend to 18 hours. When you break your fast, go for protein and healthy fats first, not carbs. That keeps your energy steady.

Most people notice sharper focus and fewer crashes within a few days. Try it and see how your brain responds. (2/3)