Muse S personal experiences

Looking to hear about personal experiences with the Muse S

Ive been meditating for 2 years and now my mind is completely calm, all day. So when I bought the Muse S I was surprised to hear heavy rain when my mind was totally focussed on my breath. Muse have not got back to me but my latest theory is the Muse is detecting a cortisol spike. So my sessions in the morning are poor with 20-40% calm but in the evening they are on average 85%.

As a intermediate meditator I don’t need the sleep function as I have complete calm as soon as I close my eyes, so its not much longer than a minuet before im off to sleep.

How is it for you??