Lifestyle factors are any factors that influence an individuals social, spiritual or physical well being over an extended period of time. This includes, but not exclusive to, activities, interests, and opinions.
They are important for a number of reasons. First, they may be sources of positive or negative influences on an individuals overall well being, and may need to be considered when calculating ones recovery time from operations. They are also used by insurance companies so that they may determine premiums. Lifestyle factors can also be used to classify people into groups that can be the focus of business activities (see Target market).
What subject is this for? Depending on what it is, make it more specific to that topic.