FollowingUnfollow SUCCESS! FollowingUnfollow. WebMD. 8,020 Answers. 353,508 Helpful Votes. 388 Followers. A. A healthy resting heart rate is between 60 and 100 beats per minute for adults. But the upper end of that range may mean a greater chance of serious health problems.ollowingUnfollow SUCCESS! FollowingUnfollow. WebMD. 8,020 Answers. 353,508 Helpful Votes. 388 Followers. A. A healthy resting heart rate is between 60 and 100 beats per minute for adults. But the upper end of that range may mean a greater chance of serious health problems.
The only other bear of a similar size to the polar bear is the Kodiak bear, which is a subspecies of brown bear. Adult male polar bears weigh 350â700 kg (772â1,543 lb) and measure 2.4â3 metres (7 ft 10 inâ9 ft 10 in) in total length.
polar bears are considered to be marine mammals. A polar bear's front paws propel them through the water dog-paddle style. The hind feet and legs are held flat and are used as rudders. A thick layer of fat, up to 11 cm (4.3 in.) thick, keeps the polar bear warm while swimming in cold water. Polar bears can obtain a swimming speed of 10 kph (6.2 mph). A polar bear's nostrils close when under water.