Answer:
Breathing and counting down can be one way. Most people say count down from 1 to 10 but its best to count down from 1 to 30.
You can listen to music to calm you down. Listen to something calming and upbeat at the same time, or something that soothes you.
Keep yourself busy. If you do random items such as singing a song, writing a story or organizing something around the house. THese activities would make you forget why your anxious in the first place.
The answer to your question would be an average healthy adult body is made up of 60% water.
Viral infections cannot be treated with antibiotics. They can only be treated with antivirals. That is why u go to the doctor and they say it's viral and it has to run its course. If you get to ill they may give prophylactic antibiotics to prevent secondary infection while your body is fighting off the virus