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.
Your heart is made up of four chambers, each of which needs to work effectively and in synchronization for optimal function. A normal resting heart rate averages between 60 and 100 beats a minute, according to the Mayo Clinic. Your resting heart rate is based on your age, weight and physical condition.