About Sarah Kleiner
Welcome - I’m Sarah - Board Certified in Applied Quantum Biology & Certified in Nutrition!
This Substack is your guide to a healthier, calmer, more energized life - built on what your biology responds to most (but often overlooked in the modern world): light, timing, nourishment, and environment.
I make the science of circadian rhythms, metabolism, and nutrition simple, accessible, and usable, even for the busiest people.
Here, you’ll learn why your body reacts the way it does, how small daily shifts create huge changes, and how to build health that feels natural instead of overwhelming.
This is a space for people who want real science and real solutions - delivered in a way that finally makes sense.
Benefits
On this substack I will be sharing content that I can’t necessarily share on Instagram or Youtube - providing early access to my podcast & Youtube videos - and client protocols/behind the scenes goodies!