I get colds starting in my throat at least two to three times a year, but that's usually the worst it ever gets.
I got the flu this year, first time since grade school. I just recently moved to South Carolina from NY...Or rather a state with medium flu activity to a state with high flu activity, so it makes sense I guess.
I just try to live life as normal as possible and curse how inconvenient being sick is. I don't really do much else differently. I may eat less but I don't really change what I eat. When I got the flu though I didn't eat anything at all because I just shit it out anyway.