WONDER #310: How Long Can You Hold Your Breath Underwater?

Question 1 of 3

When you hold your breath, what builds up inside your body?

  1. carbon dioxide
  2. oxygen
  3. helium
  4. hydrogen

Question 2 of 3

Extreme athletes known as freedivers practice what technique to temporary stop their breathing?

  1. SCUBA
  2. respiration
  3. sleep apnea
  4. static apnea

Question 3 of 3

What is something contestants normally do before participating in a breath holding contest?

  1. stretch their muscles
  2. breathe pure oxygen
  3. drink lots of water
  4. get a good night\'s sleep

Check your answers online at https://www.wonderopolis.org/wonder/how-long-can-you-hold-your-breath-underwater.