Perception is based on the interpretation of signals sent to the brain by the five senses. Each sense -- touch, smell, taste, sight, hearing -- affects how we react to the world and how we interpret events around us. The senses can alter a memory; if someone meets a person at the same time as experiencing a bad smell, it is likely that those memories will join together and each will associate with the other in the mind, even if they are not related.
Jana will become unfit, since she is not participating in any activity that gives her exercise. Therefore, she must find something that will give her physical activity.
