How can you get a cold virus if go outside on the without coat?

Getting a cold virus is not primarily caused by going outside on the cold without a coat. The common cold is caused by viruses that are spread through respiratory droplets, such as when an infected person coughs, sneezes, or talks. These droplets can be inhaled by others or land on surfaces, where they can survive for several hours and potentially infect anyone who touches the surface and then their face.

While it's true that cold weather can make the body more susceptible to catching a virus, it is not the direct cause of the cold. Staying warm by wearing appropriate clothing can help boost the immune system and reduce the risk of catching an illness, but it does not guarantee immunity to the cold virus.

It is important to practice good hygiene, such as frequent handwashing, covering your mouth and nose when coughing or sneezing, and avoiding contact with people who are sick, to prevent the spread of cold viruses.