👉 Lifefulness is a concept in philosophy and psychology that refers to an organism's ability to perform complex tasks or activities with energy and vigor, often associated with high levels of activity. This can be seen in animals such as humans who are able to exercise their bodies for extended periods of time or perform tasks at high intensity, such as running, jumping, or climbing stairs. Lifefulness is often described as a state of extreme physical endurance that requires an organism's energy and strength to sustain