Answer & Explanation:
The main character or main plot-driving character is the protagonist. Someone who opposes their goals is an antagonist--and often there is a "the antagonist" vibe, where the primary character opposing the protagonist is "the" antagonist. ... Bill and Ted's Excellent Adventure, for example, arguably has two protagonists.
You don't. Astral projection is pseudo science, but if you believe those who claim that it is a real thing, then it involves things like meditation and what not and then you can leave your body and float around and see the world and meet other souls and things like that. It's not supported by any scientific evidence.
Oxygen rich blood to your muscles into the heart pumping and function
