Earthquake!

Today was a day of rest in Hokota. I was sitting and chilling in the room when the whole apartment starting shaking. I've felt minor earthquakes before but this was definitely bigger. When everything around you starts shaking for a good 5-10 seconds, something is definitely up. At this point, I realize - I have no idea what I should for big quakes. I ended up standing underneath the door frame. I figure things shouldnt' crush me if the quake gets bigger and hopefully the door frame should hold up. The quake subsided after a good 15-20 seconds. After the quake, here I am googling to see what I should do. This was taken off a government site:

During an Earthquake

• If you're indoors, stay there. Get under -- and hold onto --a desk or table, or stand against an interior wall. Stay clear of exterior walls, glass, heavy furniture, fireplaces and appliances. The kitchen is a particularly dangerous spot. If you’re in an office building, stay away from windows and outside walls and do not use the elevator.
  

• If you're outside, get into the open. Stay clear of buildings, power lines or anything else that could fall on you.
  

• If you're driving, move the car out of traffic and stop. Avoid parking under or on bridges or overpasses. Try to get clear of trees, light posts, signs and power lines. When you resume driving, watch out for road hazards.
  

• If you're in a mountainous area, beware of the potential for landslides. Likewise, if you're near the ocean, be aware that tsunamis are associated with large earthquakes. Get to high ground.
  

• If you’re in a crowded public place, avoid panicking and do not rush for the exit. Stay low and cover your head and neck with your hands and arms.