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For assistance with Fitbit Ace LTE, visit support.google.com/fitbitacelte.

What are cardio load and target load?

Your heart is a powerful muscle at the center of your health, and its health is responsible for helping to improve your fitness. Fitbit’s cardio load is a personalized score to help you understand how hard your heart works during physical activity. Use cardio load to check how hard you pushed and avoid under or over training empowering you to reach your fitness goals while prioritizing your cardio health. Your daily target load is based on your cardio load and readiness levels that’s designed to balance recovery with performance.

Important:
  • The cardio load tile is available in the Fitbit mobile app when you pair a supported device to your account.
  • Cardio load is available on-device in Google Pixel Watch 3.
  • Cardio load requires Fitbit mobile app version 4.26 or higher.
  • Cardio load doesn’t accumulate during swimming exercises because heart rate tracking is disabled.

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Set up cardio load

Troubleshooting cardio load and target load

1Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and your movements and activity.

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