Activity Levels in Lionheart 2.0 are used in conjunction with your age and your sex to help determine the default Heart Rate Zone ranges for you.
The levels are:
Very Light - No exercise, sedentary work
Light - Exercise 1x per week, roughly 10k steps per day
Moderate - Exercise 3x per week, at least 10k steps per day, moderate intensity
Active - Exercise 5x per week with intense effort occasionally, at least 10k steps per day,
Vigorous - Athlete, Exercises 7 times per week and exerts intense effort often.