Close-up of wild sea otter (Enhydra lutris) eating shellfish while floating on it's back.
Sea Otters Demonstrate that There Is More to Muscle than Just Movement—It Can Also Bring the Heat
Sea otters are born with a supercharged metabolism that helps them stay warm in chilly waters.
ABOVE: © ISTOCK.COM, GOMEZDAVID
Sea Otters Demonstrate that There Is More to Muscle than Just Movement—It Can Also Bring the Heat
Sea Otters Demonstrate that There Is More to Muscle than Just Movement—It Can Also Bring the Heat

Sea otters are born with a supercharged metabolism that helps them stay warm in chilly waters.

Sea otters are born with a supercharged metabolism that helps them stay warm in chilly waters.

ABOVE: © ISTOCK.COM, GOMEZDAVID

energy expenditure

a mouse on an exercise wheel
Early Epigenetic Changes Regulate Voluntary Exercise in Mice: Study
Emma Yasinski | Dec 7, 2019
Altering DNA methylation in a particular area of the hypothalamus halved the animals’ voluntary exercise as adults.
a runner on a road through the desert
Metabolism Hits a Ceiling in Athletic Endurance Feats
Shawna Williams | Jun 5, 2019
In long-distance, physically taxing events, the amount of energy athletes can expend appears to peak at about 2.5 times their metabolic resting rate—a maximum likely dictated by how many calories they can digest.
Study: Microglia Tied to Weight Gain in Mice
Aggie Mika | Jul 5, 2017
Just by activating these immune cells in the brain, scientists could make mice eat more and burn fewer calories.