Physical activity

Moderate Activity: 'Minutes of moderate-intensity activity' is a metric that clinicians are trained to care about and advise their patients on. The CDC recommends that people get 150 minutes of moderate-intensity activity per week. The big challenge with this metric is that it is difficult for patients to understand when their activity is at a 'moderate' level.
Any activity is better than none: regardless of the above focus on moderate activity, clinicians also are realistic and understand that movement is better than being sedentary.

Consider showing the user's activity in relation to their goal
Think about showing not only moderate activity, but other types of activity as well (like light activity.)

Below is an interactive graph that illustrates a few of the principles outlined above.

To experiment with the code that rendered this graph, check out this JSFiddle