The Fitbit channel on IFTTT lets you automate based on your activity

[iMore.com]

One of the leading fitness bands out there, Fitbit, now plugs into the service that plugs into everything else, IFTTT. Between these two, you can set up handy if-this-then-that tasks that automagically kick in with the right triggers. New Fitbit triggers include daily activity summary, daily goals achieved (steps, distance, calorie burn, etc.), and sleep data. On the action side, outside applications can now log heart rate, blood pressure, blood glucose, and weight from connected channels into the Fitbit service. Examples of IFTTT recipes include sending you an iOS notification if you don't meet your daily exercise goal, or logging sleep data in a Google Docs spreadsheet.

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