As an 18 year young adult, I think I am quite healthy. Since university started, I've been slacking on going to the gym, but have been picking it up the past 2 weeks. It is now my personal goal to be at level 4, and eventually level 6, and perhaps even level 7! This will probably take years to achieve because my life isn't fully dedicated to fitness, I got other things such as school and a job, but hey I'll try to make the best of it