The History section of your Dashboard, allows you to view the fluctuation of your Avail score over time. 

You can visit your History Dashboard simply by clicking the button "Go To Your History Dashboard" below:

It is useful to see this information to understand how certain behaviours may impact your health.

Each small point on the graph indicates you've completed a Check-in. Other events such as Activities, Ailments and Life Events also show on the graph.

If you've sustained an ailment, your graph will have a red background between the date you've logged your ailment and the recovery date of that particular ailment. 

You may hover over any particular day/event to see more information.

Next, learn how to keep an ailment private.