This image illustrates only 3 possible perspectives through which an individual can be described: genetic code/DNA, body temperature, or physical matter. Another description is “We are what we do.” That is, the variety of activities we engage in during our lifetime defines us. When we paint our home, we are house painters; when we exercise, we are runners, walkers, weight-lifters, etc.; when we cut a tree, this practical activity defines our identity during the action.