Answer:
Potential energy turns into kinetic energy that turns into thermal energy.
Explanation:
Potential energy is a form of energy that can be stored by a body. Your body has large amounts of potential energy that will be transformed into other types of energy depending on what you are doing.
When you rub your hands together, you are turning this potential energy into kinetic energy, which is the energy associated with movement. When you rub your hands you are performing movement, then you are using kinetic energy.
When you rub your hands, your hands begin to heat up. It is at this moment that kinetic energy becomes thermal energy, which is that associated with heat loss or gain. In this case, your body is gaining heat from thermal energy.
