Answer:
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
During the 1800's these turned women into hourglasses and is becoming more popular again these days
I am black when I am clean and white when I am dirty?
Until I am measured I am not known, Yet how you miss me when I have flown.
What does no man want, yet no man want to lose?
What do angels sing in the shower?