1 . It's almost impossible to get out of bed
You wake up, and uh oh! You're sick with a 101.5 degree fever. You know to stay in bed from the past being-sick experiences, but you're thirsty. So, in order to survive, you need to get some water. But no. Your bed is the absolute comfiest place in the world right now, so you don't want to move. And then you get hungry. You get thirstier. Hungrier. You eventually reach your limit, and have to get out of bed. But that's when the real batshit starts.
2 . You shake like crazy
And I don't mean a subtle shake that most no one will notice. This is a very strong shake. Like you're an extremely scared cartoon character. Your fingers will move uncontrollably when not trying to move them, like a minor, inconvenient alien's hand. So say goodbye to your fine motor skills.
3 . You need water CONSTANTLY
So let's say you finally managed to get a drink of water, and possibly something to snack on. Well, guess what? THE EXACT SAME THIRST COMES BACK AFTER 10 MINUTES. So every time your bottle runs empty, you need to refill it or get a new one. So imagine doing that almost 6 times a day. And, on the journey there, you move a centimeter a second. Why? Because you're SICK, and your body wants to do nothing but sleep.