I think a more accurate sleep scale would be less than 6, 6 to 8, and more than 8 hours.

true that, even if we want to do exercises and go to bed on right time, I believe most of us, have a late night work time. And I even don't look into eating healthy food. I got 72%, I think I will be little less than that today.

Why does it need 10 seconds at the end to compute a score based on 4 questions?

just to show something is calculating. In fact, as you told, the percentage was calculated immediately after you submit the 4th one. Thanks for asking.

yeah :) it took around 5 secs to calculate that. May be done as a gimmick to show something is calculating, lol

I got 90% wellness, somewhat I thought of.

Mbappe can get upto 100%, he is so fit :P I got only 64%, no exercises, an unhealthy lifestyle