Honey and ginger in hot water is good for a sore throat.
Ginger also makes you sweat, so getting your body temperature high enough to kill the bacteria is a good idea.
So don't take any meds that would lower your fever.
Usually I go to sauna at one point or another when I am sick, it acts as kind of a catalyzer for the thing, whatever doesn't kill you makes you only stronger.
Also fuck sports, if you have a virus and it migrates to your heart, you're thoroughly fucked.
Sleep, loads of it, and a lot of food.
You need the energy to fight the illness.
Some swear by garlic, it is anti-bacterial (like honey) so just stick it into whatever you are eating.
Stay the hell away from anything with too much sugar, nicotine, caffeine, taurine, those will just keep you awake.