When you hear the term “lifeguard,” you may picture either not-so-mature high school kids at your local pool or beach-goers from “Beach Watch.” However, the reality of a lifeguard job is often quite different from its popular reputation. If you are willing to consider working at a pool, lifeguard positions can be an excellent second job for adults seeking to supplement their income. In fact, a lifeguard job can lead to a fulfilling full-time career if you are open to the opportunities it presents.