Fair criticisms. However, there are FDA limitations on what you can say regarding devices that both measure and affect biomarkers and neuromarkers while the user is unconscious.

This is why we describe the neural function of sleep, but can't specifically get into details regarding increases in slow-wave activity, 15% decrease in early night cortisol, 14.5% increase in HRV, etc etc. We can link to the research, but can't say "this is what we do".

We are relying on user testimonials, which we are gathering through our beta testing and beyond.

At the same time, we do describe the "clearer thinking", "immune function", "stress" etc about half way down the page.

It's something we will continue to get better at.