Physical energy refers to the capacity of an object or organism to perform work or exert force. It is often associated with movement and can be observed in various forms, such as kinetic energy, which is the energy of motion, and potential energy, which is stored energy based on an object's position. In humans, physical energy is linked to the body's ability to perform activities, influenced by factors like nutrition, exercise, and rest. Adequate sleep and a balanced diet can enhance physical energy levels, allowing individuals to engage in daily tasks and maintain overall health.