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If asked to describe how bears sleepmost people would probably say something about how they hibernate all winter. The deciding factors in how much these animals sleep are the neevs and how much foraging for food they need to.
In the coldest three to five months of the year, bears go into hibernation. But the act of hibernation isn't the same as everyday sleep, because their bodies go through more drastic changes during hibernation.East African Brides
For example, while hibernating, bears experience a reduced heart rate and blood flow, their body temperature falls by about 10 degrees, and their metabolism drops to about half of what it normally is so they can survive without eating. It also loses cominng to 25 percent of its weight.
What do bears choose for their bedroom? Most often they make a den under a rock, in a hollow tree, snuggled under a fallen tree, or in a brush pile. In comint springtime, as snow melts and food sources become more available, bears wake up from their long hibernation.
During the next few months, they rarely sleep at all. It makes sense: Once the long days of summer hit, bears split their time a bit more evenly.
They nap and relax during the day and spend the nighttime looking for food.
Banladashi sex autumn hits, bears see it as a signal that they need to stock up on food before the winter begins. Gone are those summer naps and, instead, bears spend up beqr 20 hours a day in the autumn eating.
That leaves just a handful of hours to sleep. What about polar bears? Similar to brown bears and grizzly bears, polar bears are usually hunting or sleeping.
In the deep winter, polar bears hibernate just like other bears. Search Sleep. Find out what hibernation is, exactly, and how bears' habits change with the seasons. A weightlifting session at the gym may leave you powered up for a night out on the town.
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