Answer:
I am a span of time you can always see through I am also the timepiece with the most pieces. What am I?
Kills the bad ones and the sad ones. Tightens to fit, so one size fits.
Stealthy as a shadow in the dead of night, cunning but affectionate if given a bite. Never owned but often loved. At my sport considered cruel, but that's because you never know me at all.
John was going to a party and, as he approached, he could see in the windows that it was completely packed with people. He went inside only to discover that there wasn’t a single person inside
What has 13 hearts but none beat?
You use it between your head and your toes, the more it works the thinner it grows.