TED Talksのインスタグラム(ted) - 10月16日 23時36分

The human body in its natural form—without weights or wetsuits—has just the right buoyancy for deep-water diving. We can float at the water’s surface or dive down to great depths with little effort. Gravity still exists on the seafloor below 40 feet, which makes activities like underwater hiking and even yoga possible… as long as you can hold your breath. Learn how water affects the human body at go.ted.com/freedivers
Photo by Jean-Marie Ghislain

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