When we go out, we use the three-layer system. It’s like lasagna, it’s better in multiple layers.
The old trick of joggers is to use three layers:
- a breathable layer, for example cotton. This layer is called the second skin
- a thermal layer, for example a wool sweater. This layer is called theinsulating
- an impermeable layer, for example a raincoat. This layer is called the windbreaker
But then, we might put several insulating layers to be sure? The reasoning is correct, but the gain will be minimal.
The principle of an insulating layer is to trap a quantity of air who will be heated by our body, thanks to thermogenesis, and which will move as little as possible. She will do barrier once morest the outside. We can put a second barrier, but it will be more mobile, let’s say because it is further away from the body, and therefore will act less as an obstacle.
