It stretches your brain and regular muscles.
Of course; the horse must walk and warm up with movement before running.
It's warm because of the other currents pushing the warm currents up north.
Convection keeps us warm by transferring heat through the movement of fluids, such as air or water. When a fluid is heated, it becomes less dense and rises, while cooler, denser fluid sinks, creating a circulation pattern. This continuous movement allows warm air to spread throughout a space, effectively distributing heat and maintaining a comfortable temperature. In homes, heating systems often utilize convection to warm up rooms efficiently.
The initial phase of a warm-up is typically referred to as the "general warm-up." This phase involves performing light cardiovascular activities to increase blood flow and raise body temperature before moving on to specific warm-up exercises.
The upward movement of warm air and the downward movement of cold air forms fluids.
The second phase of the warm up involves a dynamic range of movement exercises to loosen up the joints and muscles to be used. Unges, squats, lower back rotations, trunk rotations, leg kicks and arm rotations are some of the examples of dynamic warm up stretches.
undertow movement of cold polar water
ONE of the things is to shiver. Shivering is involuntary muscle movement that creates heat.
True e.g. 15 Celsius down are cool-cold, 20 Celsius up are warm-hot...😁
The inside of the body is warm. Therefore, anything that comes from inside the body is warm.
Conduction
The sun heats up the planet on were live which is earth to keep us warm