Why you get cold when you stand still

Short answer: Movement is the body's main source of heat. As soon as you stop, heat production drops at once, while heat loss continues unchanged. That is why you can go from warm to cold within minutes when you stand still after a walk.

The muscles produce the heat

Active muscles can multiply the body's heat production, which is why you stay warm while you keep moving. That applies to a brisk walk, a bike ride or work in the garden. The heat is a by-product of the muscles working. As soon as they rest, the extra heat stops. See bamboo boxers.

Heat loss carries on

While heat production falls, the body still gives off just as much heat to its surroundings. The air is the same, the wind is the same, and the skin is still warm after the walk. The body loses as much heat as before but produces far less. That imbalance is what makes you start to feel cold. See bamboo T-shirts for men.

It happens faster than you think

It usually takes five to ten minutes before you really feel the cold. At first, standing still feels pleasant because you are still warm. But the body is already losing more than it makes. Once you are cold, it is harder to get back to a comfortable temperature without moving again.

Moisture speeds up the drop

If your clothes are damp with sweat, you cool down many times faster. Water carries heat away from the skin far better than dry air, and a wet layer against the body draws the warmth out. A layer that absorbs moisture into the fibre keeps the skin drier. See bamboo socks.

Put the layer on before you stop

The best advice is to put a layer on before you stop, not afterwards. That way the body has no time to cool before the layer is on, and you keep the warmth you have built up. If you carry a backpack or bag, put the extra layer on top so it is easy to reach.

Think about where you stand

Where you stop also matters. In wind or shade, the body loses heat faster than in shelter and sun. If you can choose, find a sheltered spot for your break. Avoid sitting directly on cold stone or metal, because the surface also draws heat out of the body.

Small movements help

If you have to stand still for a while, for example at a bus stop or on the sideline, small movements can make a difference. Step lightly on the spot, roll your shoulders or walk a few steps back and forth. It keeps the muscles working and adds a little warmth without making you sweat again.

Change the wet layer

If you are wet with sweat, it is a good idea to change the innermost layer as soon as you can. A dry layer next to the skin gives the body a much better chance of keeping warm than an extra layer over something damp. Bring a dry pair of socks if you know you will be standing still afterwards.

Frequently asked questions

Why do you feel cold when you stand still

Because the muscles stop producing heat, while heat loss to the surroundings continues unchanged. The body gives off more heat than it makes.

How fast does it happen

Within five to ten minutes. If your clothes are damp with sweat, it happens even faster, because the moisture carries heat away from the skin.

What can you do

Put a layer on before you stop, not afterwards. Then the body has no time to cool before the layer is on, and you avoid the drop that otherwise comes after a few minutes.