After a myelogram, it's generally recommended to lie flat for at least 1-2 hours to help minimize the risk of headaches and other complications. However, your healthcare provider may advise you to stay down longer depending on your specific situation and any symptoms you may experience. Always follow the instructions provided by your medical team for the best recovery.
You can stay as long as you need in a hostel.
as long as they need to.
tae
You need good sleep
4 years
dolphins need to stay with there mothers for about years.
It's speed. Because if we stay in the air for to long you will just fall down. Also you need strength because that will lift you up from the wall and you will be going up.
Forever, they just need to stay moist.
You will need to have alot alot alot of gas in your spaceship so you can come back down if you wanted to stay up there for a long time but if you wanna stay up there until you it will take about 100,000 hours for you to die...
Species dependant.
Your whole life if you need to.
You need to check with you vet on that, it will vary.