Last time I was really sick was last summer when I got food poisoning from some bad fish tacos
It hit me so suddenly and I felt horrible for one day. The day after, I felt weak and tired from not being able to eat or hold any food down the day before. I recovered in about two days, but it was really bad food poisoning I got.
Thankfully, I haven't had a really severe cold or flu yet this year. I'm generally a physically healthy person, and don't get sick or run down too often