About a week.
2 days
3 weeks (21 days) that is if you have the right body and 3 days without water
You can live 3 minutes without air, After 3 days, you need water and you can make it 3 weeks without food. But some people have survived 8 to 10 days without water. As for medicines, it all depends on the medicines.
No you can't live without a head.
40 days
fish will live 3 days without food.
* It's not a matter of how long someone can live without sleep but a matter of how long can someone stay awake without passing out. Probably not more than two days. * You can find normal people staying awake for three days. You can find exceptional people to stay awake for 30 days. Some extra exceptional people lie awake for more than 20 to 30 years. * The current record is a bit over eighteen days, but this SHOULD NOT BE ATTEMPTED.
25 days
A camel can live upto 3 days without eating.
Cockroaches.
A committee.
Well go somewhere else for a couple days since they cannot live long without people