Hey Iwan,

Heart rate variability (HRV) is an indicator of how your body responds to stress.

And ten weeks ago, mine was hot garbage.

Then I found one book, ran the protocol Tim Ferriss talks about on his podcast, and doubled it in ten weeks with nothing more than breathing, twice a day.

But raising a number wasn’t even the upside.

I feel like I’m running a whole new operating system in my body.

New video breaks down the whole experiment:

  • The habit Tim Ferriss calls "the API to your nervous system"

  • How I finally solved my sleep

  • Why doubling the number was never the real win

Watch it here <<

To your continued success,

Matt Diggity