Polar bears are in danger of extinction in the future if globalwarming continues, as their habitat, Arctic sea ice, is shrinkingevery year, making it difficult for bears to have enough food tolast through the lengthening summers.With a population of nearly 25,000, the polar bear is not in dangerof extinction now.
Aerobic exercise stimulates the growth of new neurons, also known as neurogenesis through the release of brain-derived neurotopic factors. Endurance exercises release Irisin, a hormone linked to improved cognitive function, fat loss and overall health.
The intent of regularly performing an aerobic exercise is to increase your heart rate to your target heart rate and maintain that level for a minimum of 20 consecutive minutes. By doing so, you will achieve what is defined as an aerobic effect.elow is a brief list of several of the performance benefits associated with aerobic exercise: Improves endurance by increasing the storage of energy molecules (i.e. fats and carbohydrates) within the muscle tissue. Increases blood flow throughout the tissue of the muscles.