• Sleep
  • Recently, I have had several opportunities (?) to sleep on the floor, and I have gradually understood the necessary conditions.
  • Conditions for being able to sleep on the floor:
    • Hygiene:
      • I’m not sure about the impact on health, but I personally feel resistance to sleeping in areas where shoes are worn.
      • Even if the floor is not a shoe area, just placing a sheet or mat on it makes it more comfortable.
    • Coldness:
      • I can’t sleep if it’s cold, and even if I manage to sleep, I wake up easily.
      • From experience, I have learned that the floor is often colder than the air.
        • It seems good to have insulation mats or down jackets.
    • Firmness:
      • Surprisingly, I realized that I can manage even if the floor is quite firm.
        • Of course, a softer surface is better, but I can still sleep.
      • I was able to sleep on a relatively firm carpet, at least.
  • It’s surprising to learn that firmness is not that important in the sleeping environment.