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.
Aerobics is the term coined by Dr. Kenneth Cooper in 1968 to describe sustained low to moderate cardiovascular exercise. Aerobic activities include jogging, cycling, rowing, swimming and group exercise classes such as step. Aerobic exercise offers a wide variety of benefits to your heart, lungs and muscles. Aerobic exercise affects your muscles in the long term as a result of your workouts and also in the short term while you exercise.