Little Breathers

The video explains the body's natural response to breathing and the diving response, which conserves oxygen by stopping breathing. It discusses how training can help override this response, allowing humans to hold their breath longer. Techniques such as breathing through pursed lips can increase lung capacity, enabling breath-holding for up to 9 minutes, similar to some aquatic animals.

What physiological change occurs in our body during the diving response?

• Increased oxygen consumption

• Increased heart rate

• Production of more red blood cells

• Decreased blood pressure

How can we train our body to control the diving response?

• By holding our breath for short periods

• By breathing through tightly pursed lips

• By swimming in warm water

• By increasing physical activity

What is the effect of breathing through tightly pursed lips?

• It increases heart rate

• It causes the lungs to stretch longer

• It reduces oxygen levels in the blood

• It decreases lung capacity

With practice, how long can humans potentially hold their breath?

• Up to 5 minutes

• Up to 7 minutes

• Up to 9 minutes

• Up to 11 minutes

Which animals have a similar breath-holding capacity to trained humans?

• Otters, dolphins, and beavers

• Sharks and whales

• Seals and sea lions

• Penguins and polar bears