The White Whale. 1  Belugas (Delphinapterus leucas) are one of the most recognizable and popular whales because of their white skin colour and âsmilingâ upturned mouth. They are extremely sociable mammals that live, hunt, and migrate together in pods, ranging from a few individuals to hundreds of whales.
Here's what these terms mean: 1  Pace: Your immediate pace in minutes per mile or kilometer. 2  Average Pace: Your cumulative average pace for your current session in minutes per mile or kilometer.
Research has shown that walking at speeds of 3.5 to 4.5 miles an hour - that's brisk walking, not strolling - produces cardiovascular benefits. A woman of average size can walk comfortably at brisk speeds of 3.5 to 4 miles an hour, while the average-sized man can walk at 4.5 to 5 miles per hour. Slower walking (2 miles per hour) can be advantageous for older people, cardiac patients, or people recuperating from illness.