Heart Rate Monitoring & Data Use
At BEAT81, we provide complimentary heart rate sensors for every workout. These track your calories burned, heart rate, and BeatPoints to ensure you get the most from your session.
Why Provide Health Details?
Health data like age, weight, and height helps calibrate the sensors for precise tracking.Optional Participation:
You can train without the sensor, but won’t receive personalised stats or heart rate insights.To view your maximum heart rate, open the app and go to your dashboard. Scroll down to your results, select a class you have attended, and navigate to the heart rate section. There, 100%= will represent your personal maximum heart rate.
How Maximum Heart Rate Is Calculated?
Your Maximum Heart Rate (MHR) is the highest number of beats per minute your heart can achieve during maximum effort. It’s estimated using the formula:
220 - Your Age = MHR
While this works for most people, individual differences mean your actual MHR might vary. If your heart rate readings seem inaccurate—such as exceeding 100% of your MHR or staying low despite intense effort—speak to your coach who will be able to help you adjust it or reach out to us through our support chat and we will happily adjust it for you.
At BEAT81 we calculate two types of calorie burn:
Calorie burn during the workout
Calorie burn after the workout due to the after-burn effect
Calorie burn during the workout
We use two standard formulas here:
Keytel formula for calculating heart rate with an unknown VO2 Max
Harris-Benedict formula for calculating the basal metabolic rate
We use the Keytel formula to calculate your Gross Calorie Burn, meaning calories burned during exercise. We then use the Harris-Benedict formula to calculate your Basal Metabolic Rate: how many calories you would have burned resting. Finally, subtracting your “resting” calories from the gross calories you burned during the workout gives us the calories you burned during your BEAT81 workout.
Keytel Formula used to calculate Gross Calorie Burn:
Male:
(-55.0969 + 0.6309 * average heart rate + 0.1988 * weight + 0.2017 * age) / 4.184 * 60* durationInHours
Female
(-20.4022 + 0.4472 * average heart rate - 0.1263 * weight + 0.074 * age) / 4.184 * 60 * durationInHours
Harris-Benedict formula used to calculate Basal Metabolic Rate (calories burned per 24 hours):
Male:
13.75 * weight + 5 * height - 6.76 * age + 66
Female:
9.56 * weight + 1.85 * height - 4.68 * age + 655
Calculating the Resting Metabolic Rate calorie burn for the workout duration:
Basal metabolic rate * 1.1 / 24 * durationInHours
Calculating calorie burn during a workout:
Net calorie burn = Gross calorie burn - Resting metabolic rate calorie burn
Calorie burn after the workout
When you exercise close to your maximum heart rate your body requires additional O2 after the workout to recover - this is called excess post-exercise oxygen consumption (EPOC). Your EPOC is bigger the more minutes you train close to your maximum heart rate. Therefore, the longer you train above 80% the more calories you burn via EPOC after the class.
How we calculate post workout calories:
Trained above 80% for less than 8.5 minutes -> EPOC calories = Workout calories * 0.2
Trained above 80% for more than 8.5 and less than 16.5 minutes -> EPOC calories = Workout calories * 0.25
Trained above 80% for more than 16.5 minutes -> EPOC calories = Workout calories * 0.2
The total calories you burn thanks to the class is the sum of workout calories and EPOC calories.
Post-Workout Results
Post-workout emails are sent 2–3 hours after your class. If you don’t receive one, check your spam folder or access your workout results in the app. If the issue persists, contact our support team.