[100% Off] Blood and the respiratory system Free Course Coupon

Description

At some point in your life, you have probably tried to see how long you could hold your breath. It most likely took about 30 seconds before you felt the need to breathe. Free-divers, people who descend deep underwater without any breathing equipment, can hold their breath for much longer. In July 2016, William Trubridge set a world record in unassisted free-diving by going down 102 metres (334 feet) into Dean’s Blue Hole, a large marine sinkhole in the Bahamas. He did so on a single breath that he held for more than 4 minutes, as you can see in the following video. (Make sure to open the link in a new window/tab so you can easily navigate back to this page.)

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