Here’s some info on what data Google Fit collects and why. Here’s how to avoid having Apple Health collect your data at all: go to your settings in iOS, then Privacy, then Motion and Fitness, and turn it off. Young female runner checking her pulse with an activity tracker after training (You can see and control which apps are accessing your Apple Health data by opening the app and clicking on your icon in the top right-hand corner.) You can also simply delete your Apple Health data. For example, if you use an iPhone, the data collected by Apple Health is very secure (especially, as the story indicates, if you use 2-factor authentication), any other fitness apps you have on your device (such as Garmin Connect, the Suunto app, adidas Runtastic etc.) may be accessing that data also, so you need to be familiar with their privacy policies, not just Apple’s. The story says a general data audit should look like this: “Check which data is being collected, which parts of it are public, and how many of your apps can access it.” What it boils down to is this: your data is only as safe as the least-safe app you use to interpret your data.

RELATED: Google’s acquisition of Fitbit for $2.1 billion raises privacy concerns Because, do you want marketers to know your step count and fitness habits? (No, you do not.) Do you use a GPS and fitness app to track your workouts? In the wake of Google’s recent acquisition of Fitbit and concerns about Google having access to the goldmine of personal health data Fitbit has been accumulating, Wired magazine has published a story about how to protect your data.

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