SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/wt-altitude-sleep-1600-feet

Above about 9,850 feet, how much higher should you raise your sleeping altitude each day, per CDC?

Start playing free

  1. No more than about 1,600 feet
  2. Up to 5,000 feet
  3. As high as you can hike

🔒 The answer is for SESK members. Members see the answer, why it's right and the official sources for every card of Stuff Every World Traveler Should Know, plus timed practice exams.

The first 50 cards of every test are free to play.

Play the free cards See membership

Like this card?
Play the game

References

  1. High-Altitude Travel and Altitude Illness, CDC Yellow Book www.cdc.gov/yellow-book/hcp/environmental-hazards-risks/high-altitude-travel-and-altitude-illness.html Checked 2026-10-12.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

TravelFor a foreign visitor, Thailand requires a passport to be valid at least six months after which date?TravelFor a foreign visitor, how long must a passport remain valid after leaving South Africa?TravelFor a U.S. visitor entering the Schengen area, the passport must have been issued within how many years?

That's stuff everyone should know.