Challenges in sport freediving is that humans can destroy their limit. By holding your breath and dive into the water for long and short experience that when the sea is calm and the freediving well then, divers have a peaceful mind to concentrate for divers who can dive. deeper than 100 meters, the heart rate will be reduced to just 20 beats per minute, from the usual 60 per minute sports freediving However, it is a dangerous sport. And a sport that has killed many.
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