I built this tool for my girl friend. A small nimble website to help you focus on breathing deep, like really deep:

Inhale for four seconds, hold your breath for four seconds, exhale for four seconds, hold your breath for four seconds, and repeat...

Very simple. And yet, taking deep breaths helps you focus on your body and calms your mind. Try it out.

The website is very minimal on purpose – no tracking, no accounts, no newsletter banners, no tracking. Nevertheless, if you miss a feature, please leave a comment.