Understanding Your In-Body Scale
- Hans Kim
- Aug 11
- 2 min read
Updated: Aug 12
A Comprehensive Guide for In-body measurements
Welcome to your journey of understanding the numbers on your in-body scale! As Pilates enthusiasts, it’s essential to grasp the metrics provided by this device to track your health and fitness effectively.
This guide will help you interpret key measurements like body fat percentage, skeletal muscle mass, BMI, and basal metabolic rate, along with tips for accurate readings.

Key Metrics Explained
1. Body Fat Percentage
Definition
Body fat percentage measures the proportion of fat in your body compared to your total body weight.
Recommended Ranges
Women: 21% - 35% (healthy range)
Men: 8% - 24% (healthy range)
Interpretation
A lower body fat percentage is generally associated with better health and fitness levels. However, extremely low levels (below 14% for men and 20% for women) can lead to health issues.
2. Skeletal Muscle Mass (SMM)

Definition
Skeletal muscle mass refers to the weight of the muscles attached to your bones.
Recommended Ranges
Varies based on age, sex, and fitness level, but generally:
Women: 20% - 30% of total body weight
Men: 30% - 40% of total body weight
Interpretation
Higher skeletal muscle mass indicates better strength and metabolism. It’s crucial for overall health and functional fitness.
3. Body Mass Index (BMI)
Definition
BMI is a simple calculation using height and weight to categorize individuals into underweight, normal weight, overweight, or obese.
Recommended Ranges
Underweight: BMI < 18.5
Normal weight: BMI 18.5 - 24.9
Overweight: BMI 25 - 29.9
Obese: BMI ≥ 30
Interpretation
While BMI is a useful screening tool, it doesn’t differentiate between fat and muscle. Therefore, athletes may fall into the overweight category despite having low body fat.
4. Basal Metabolic Rate (BMR)
Definition
BMR is the number of calories your body needs at rest to maintain vital functions.
Recommended Ranges
Varies by age, sex, and body composition.
Generally:
Women: 1,200 - 1,500 calories/day
Men: 1,500 - 1,800 calories/day
Interpretation
A higher BMR means your body burns more calories at rest, which can be beneficial for weight management.
Tips for Accurate Measurements
To ensure the reliability of your readings, consider the following:
Consistency is Key
Take measurements at the same time each day, preferably in the morning after waking up and before eating or drinking.
Hydration Matters
Avoid drinking water for at least two hours before weighing yourself, as hydration levels can significantly affect body fat percentage readings.
Avoid Heavy Meals
Ensure you haven’t eaten a large meal before taking measurements to avoid fluctuations in weight.
Limit Physical Activity
Try not to exercise right before taking measurements, as this can temporarily alter your body composition readings.
Use the Same Scale
Different scales can yield different results, so stick to one device for tracking progress.
Conclusion
Understanding the metrics on your in-body scale can empower you to take charge of your health and fitness journey. By interpreting these numbers correctly and following best practices for measurement, you can track your progress effectively and make informed decisions about your Pilates training and overall wellness.
Recommended Sources
American Council on Exercise (ACE)
National Institutes of Health (NIH) - BMI Calculator
Centers for Disease Control and Prevention (CDC) - Body Composition
Feel free to reach out for any further questions or personalized advice on your fitness journey!




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