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
You should eliminate empty calories from your diet.
What don't you understand?
Capillaries connect arterioles and venules and enable the exchange of water, oxygen, carbon dioxide .