We sleep in sleeping bags located in small crew cabins, attached to walls.
There is no Refrigeration. All foods have to be freeze dried or vacuum packed
Astronauts wash their hair with a "rinseless" shampoo.Many astronauts have a personal hygiene kit. The kit contains the items they chose to take like toothpaste.
I also heard that they take part in medical experiments to determine how well their bodies are adjusting to living in microgravity for long periods of time.
The station crew spends their day working on science experiments that require their input
How do astronauts use the bathroom on the ISS? The astronauts have to position themselves on the toilet seat using leg restraints. The toilet works like a vacuum cleaner with fans that suck air and waste. Each astronaut has a urinal funnel that has to be attached to the hose's adapter. Fans suck air and urine through the funnel. Microgravity is a disadvantage to them.
Astronauts have not yet discovered me. However it is possible that they can, one day on the ISS-From ALIEN