If you lose the grip on handelbars of a bike why do they feel colder?

When you lose grip on the handlebars of a bike, your hands are no longer in contact with the warm surface of the handlebars, which can lead to a sensation of cold. The handlebars can be made of metal or other materials that conduct heat away from your hands more effectively than air does. Additionally, the wind and air exposure can accelerate heat loss from your hands, making them feel colder. This combination of factors contributes to the chilly sensation when you lose grip.