Ergonomic Calculator
Estimate the calories burned during a yoga session based on pose intensity, session duration, body weight, and yoga experience level.
Formulas Used
The Yoga Calorie Burn Score is calculated using a weighted formula assessing pose intensity, session duration, body weight, and yoga experience level.
- Duration Score:
\[ D_{\text{score}} = \max\left(0, 5 – \frac{|D – 60|}{15}\right) \]
Where \( D \) is session duration in minutes. Score decreases as deviation from 60 minutes increases.
- Weight Score:
\[ W_{\text{score}} = \max\left(0, 5 – \frac{|W – 70|}{20}\right) \]
Where \( W \) is body weight in kg, with 70 kg as the reference average. Score decreases as deviation increases.
- Raw Calorie Score:
\[ R_{\text{raw}} = w_1 P + w_2 D_{\text{score}} + w_3 W_{\text{score}} + w_4 E \]
Where:
- \( P \): Pose intensity rating (1–5)
- \( D_{\text{score}} \): Duration score
- \( W_{\text{score}} \): Weight score
- \( E \): Experience level rating (1–5)
- \( w_1 = 5 \): Weight for pose intensity
- \( w_2 = 5 \): Weight for duration
- \( w_3 = 5 \): Weight for body weight
- \( w_4 = 5 \): Weight for experience level
- Yoga Calorie Burn Score:
\[ \text{YCBS} = \max\left(0, \min\left(100, \frac{R_{\text{raw}}}{100} \cdot 100\right)\right) \]
Normalizes the raw score (0–100) to 0–100. Ratings: Low (0–25), Moderate (25–50), High (50–75), Very High (75–100).
- Estimated Calories Burned:
\[ \text{Calories} = P \cdot \frac{D}{60} \cdot W \cdot \frac{E}{5} \cdot 4 \]
Estimates calories burned based on pose intensity (\( P \)), duration (\( D \)), weight (\( W \)), experience (\( E \)), and a base MET factor of 4 for yoga.
Example Calculations
Example 1: Typical Yoga Session
Inputs: Pose Intensity = 3, Session Duration = 60 minutes, Body Weight = 70 kg, Experience Level = 3
Calculations:
- Duration Score: \[ \max\left(0, 5 – \frac{|60 – 60|}{15}\right) = \max(0, 5 – 0) = 5 \]
- Weight Score: \[ \max\left(0, 5 – \frac{|70 – 70|}{20}\right) = \max(0, 5 – 0) = 5 \]
- Raw Calorie Score: \[ 5 \cdot 3 + 5 \cdot 5 + 5 \cdot 5 + 5 \cdot 3 = 15 + 25 + 25 + 15 = 80 \]
- Yoga Calorie Burn Score: \[ \frac{80}{100} \cdot 100 = 80 \]
- Estimated Calories: \[ 3 \cdot \frac{60}{60} \cdot 70 \cdot \frac{3}{5} \cdot 4 = 3 \cdot 1 \cdot 70 \cdot 0.6 \cdot 4 = 504 \]
- Rating: Very High (75–100)
Result: Yoga Calorie Burn Score: 80 (Very High), Estimated Calories: 504 kcal
Example 2: Short Gentle Session
Inputs: Pose Intensity = 1, Session Duration = 30 minutes, Body Weight = 50 kg, Experience Level = 1
Calculations:
- Duration Score: \[ \max\left(0, 5 – \frac{|30 – 60|}{15}\right) = \max(0, 5 – 2) = 3 \]
- Weight Score: \[ \max\left(0, 5 – \frac{|50 – 70|}{20}\right) = \max(0, 5 – 1) = 4 \]
- Raw Calorie Score: \[ 5 \cdot 1 + 5 \cdot 3 + 5 \cdot 4 + 5 \cdot 1 = 5 + 15 + 20 + 5 = 45 \]
- Yoga Calorie Burn Score: \[ \frac{45}{100} \cdot 100 = 45 \]
- Estimated Calories: \[ 1 \cdot \frac{30}{60} \cdot 50 \cdot \frac{1}{5} \cdot 4 = 1 \cdot 0.5 \cdot 50 \cdot 0.2 \cdot 4 = 20 \]
- Rating: Moderate (25–50)
Result: Yoga Calorie Burn Score: 45 (Moderate), Estimated Calories: 20 kcal
Example 3: Intense Long Session
Inputs: Pose Intensity = 5, Session Duration = 90 minutes, Body Weight = 80 kg, Experience Level = 5
Calculations:
- Duration Score: \[ \max\left(0, 5 – \frac{|90 – 60|}{15}\right) = \max(0, 5 – 2) = 3 \]
- Weight Score: \[ \max\left(0, 5 – \frac{|80 – 70|}{20}\right) = \max(0, 5 – 0.5) = 4.5 \]
- Raw Calorie Score: \[ 5 \cdot 5 + 5 \cdot 3 + 5 \cdot 4.5 + 5 \cdot 5 = 25 + 15 + 22.5 + 25 = 87.5 \]
- Yoga Calorie Burn Score: \[ \frac{87.5}{100} \cdot 100 = 87.5 \]
- Estimated Calories: \[ 5 \cdot \frac{90}{60} \cdot 80 \cdot \frac{5}{5} \cdot 4 = 5 \cdot 1.5 \cdot 80 \cdot 1 \cdot 4 = 2400 \]
- Rating: Very High (75–100)
Result: Yoga Calorie Burn Score: 87.5 (Very High), Estimated Calories: 2400 kcal
How to Use the Calculator
Follow these steps to estimate calories burned during a yoga session:
- Enter Pose Intensity: Rate the intensity of yoga poses (1–5, 1 = gentle, 5 = vigorous).
- Enter Session Duration: Input session length in minutes (10–180, typical 30–90).
- Enter Body Weight: Input weight in kg (30–150).
- Enter Experience Level: Rate yoga experience (1–5, 1 = beginner, 5 = advanced).
- Calculate: Click “Calculate Yoga Calorie Burn Score” to see the result.
- Interpret Result: The result shows a 0–100 score with a rating (Low: 0–25, Moderate: 25–50, High: 50–75, Very High: 75–100) and estimated calories burned. If you see “Please fill in all fields,” ensure all inputs are valid.
- Share or Embed: Use the share buttons to post results on social media, copy the result, or get an embed code.
Note: This is a simplified model. Actual calorie burn depends on additional factors like specific poses, room temperature, and individual metabolism.