Physical fitness involves the proper functioning of which body systems?

What are the systems used to describe how information is stored in the brain? list each.

Can someone me. so last night i was with my girl and i ended up with a peanut butter jar in my anus. sadly we have tried to pull it out but its well stuck in there : ( any ideas how to get it out?

The consists of a mixture of gases and particles, including oxygen, nitrogen, hydrogen, carbon dioxide, water vapor, and dust.