How does microgravity affect sleep patterns?

Answer 1

From what I've read, microgravity by itself isn't as affecting to sleep patterns as it's *effects* on the body... fluids tend to pool away from the extremities, sinuses don't drain the way you're used to in Earth's gravity, you have no 'weight' of your head on a pillow.
One of the cosmonauts, Aleksei Leonev, said of his first mission to a Salyut station, "I could not sleep. For 2 days, I tried, and was unable to attain sleep. Then, finally, I virtually collapsed from exhaustion and slept." He cited not only the excitement of the mission, but that his body position didn't feel right - he couldn't sleep in the natural relaxed state the body assumed in space.

Answer 2

Weigth is relative;(that means gravity is also relative). When there is no interaction between two masses and only only mass exist there is no weight , the reason is that weight is only measured relative to another mass.
The Human body is at its homeostasis with a certain amount of gravity pressure while interacting with the mass of the earth. Taken out of that environment it would take time for the body processes to adjust.

Answer 3

No humans have experienced true microgravity.
Microgravity is *not* the same as weightlessness. Astronauts in orbit experience weightlessness because they are effectively in free-fall; thus, in an odd twist it is because of gravity (which holds them in orbit) that they are weightless!

Read up:http://en.wikipedia.org/wiki/Weightlessness

Done.

Answer 4

frequency in the brain like talking on a cell phone before going to sleep