Not in the short term,

Animals don't eat when they are sick or injured, it aids recovery.

A couple of days without food wont hurt anyone.

Yes. That is Correct.

Yes.

But unlike a cold, the sickness you get when you don't eat is FATZL.

You WILL die

Yeah, you could starve. Leads to deficiencies and reduced immunity.

You need food, water, air, and sleep to live. If you lift weights, do cardio, and eat a healthy diet, you will live even better and longer.

Very. Your body first will automatically start to digest its own fat, then when that's gone it will start to digest the muscle fibres, then your kidneys will block and fail leading to an unpleasant death.

If you don't eat, you die.