If you are cold what’s the fastest method to get warm

Conduction
Convection
Radiation
Polarization
Calcification

The fastest method to get warm if you are cold is through conduction. Conduction occurs when heat is transferred through direct contact with a warmer object or surface. By touching a warm object, such as a blanket, heater, or another person, the heat is transferred from the warmer object to your body, helping you warm up quickly.