1) I tried it, enjoyed it, thank you for building it.

2) I learned something new: I was aware of how making the exhale longer than the inhale promoted relaxation. Somehow I hadn't thought of inverting it for the opposite effect: more energy. Your app mentioned it and it was an "aha" moment for me. I tried it, and certainly feel something, but too early to say if it's a placebo effect or something real. Thank you for this new knowledge.

3) The pause portion. What does Richie Davidson (or other research say about it). What does it do, please? That is, what is the difference between not pausing at all between inhale and exhale, vs. pausing (i.e. box breathing)? Thanks in advance.