Sloths have the astonishing ability to slow their heart rate down by two-thirds, allowing them to comfortably hold their breath underwater for up to forty minutes, which vastly…

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Sloths have the astonishing ability to slow their heart rate down by two-thirds, allowing them to comfortably hold their breath underwater for up to forty minutes, which vastly outperforms the biological limits of dolphins. This incredible aquatic stamina is largely due to their notoriously sluggish metabolism, which dictates almost every aspect of their moss-covered, agonizingly slow existence. Imagine being so universally committed to doing absolutely nothing and burning zero calories that you accidentally become a champion free-diver, easily outclassing majestic marine mammals simply because panicking and needing oxygen sounds like way too much effort for a Tuesday afternoon