This is an example of the:
- **Law of conservation of energy**
When you move your muscles, the chemical energy stored in the cells is converted into mechanical and thermal energy. According to the Law of Conservation of Energy, energy cannot be created or destroyed, only transformed from one form to another. In this case, the chemical energy is transformed into mechanical energy that allows your muscles to contract and move, as well as thermal energy which produces heat as a byproduct of muscle activity. This principle highlights how energy is constantly changing forms but the total amount of energy in a closed system remains constant.
