It can help you keep track of your fitness.
Yea but it’s only a 99% chance you won’t
The word abuse has a much stronger connotation than "bullying" which is usually associated with teasing. The former, however, is typically associated with emotional and/or physical harm on the body. If someone is being "bullied" and it involves harm on the body, then it could definitely go hand-in-hand with abuse.
They are expelled from the kidneys.