Antibiotics are strong medicines that treat bacterial infections. Antibiotics won't treat viral infections because they can't kill viruses. You'll get better when the viral infection has run its course. Common illnesses caused by bacteria are urinary tract infections, strep throat, and some pneumonia.
Walking. You can go anywhere to walk even if the weather doesn't work out well. Walmart or other large stores are great for that. also health wise almost anyone can walk as a way to get daily excercise. however some may not be able to walk as far as others.