What is Lifercise? It is a word I made up. At least I think I made it up. A Google search showed no direct hits. So allow me to define this new word for you:
life-er-cise (lyfercize) noun. The practice of taking opportunities that arise in your daily life to get exercise. Example:
“Jim wanted to take the elevator but I told him we should get some lifercise so we took the stairs.”