She calculated that the escape dives her team monitored in narwhals required 97 percent of the animal's oxygen supply and often exceeded its aerobic dive limit (meaning depletion of
oxygen stores in the muscles, lungs, and blood, followed by anaerobic metabolism).
The authors calculated that the frantic getaway, combined with what they called «cardiac freeze,» severely and rapidly depletes the narwhals» available oxygen in their lungs, blood and muscles — using 97 percent of the creatures»
oxygen stores compared with 52 percent on normal dives of similar depth and duration.
Scientists who studied long - lived diving birds, which represent valuable models to examine aging in the wild, found that
blood oxygen stores, resting metabolism and thyroid hormone levels all declined with age, although diving performance did not.
This helps them to swim, and often to glide, with minimal effort and extend
their oxygen stores for as long as possible.
Normal dives of similar duration and depth used only about 52 percent of a narwhal's
oxygen store, the study found.
Your quads, hamstrings and glutes are home to some of the biggest muscles in your body, and those muscles will torch calories both during and after your workout, thanks to excess post-exercise oxygen consumption (EPOC), the process by which your body replenishes
its oxygen stores.
High - intensity training sessions like The New IronStrength Workout force your body to work harder to build
its oxygen stores back up, which means you burn calories for up to 48 hours after your workout is done!
And if you've completed a higher intensity workout, your body will have to work even harder to replenish
its oxygen stores, resulting in an afterburn effect known as EPOC.