Standard height-weight charts often ignore bone density, muscle mass, and age. A 90kg athlete and a 90kg sedentary individual have the same “weight” but entirely different metabolic futures.
#### The Range Concept
A healthy weight is better described as a 10% physiological window where your biomarkers (blood pressure, glucose, HRV) remain stable and your energy levels are high.
#### The Better Metrics
1. **Strength over Scale:** Can you perform basic functional movements?
2. **HRV Baseline:** A high [HR Variability](/hrv-calculator/) often indicates a heart and nervous system that are resilient, regardless of slight weight fluctuations.
3. **Find Your Window:** Use the [Ideal Weight Calculator](/ideal-weight-calculator/) to see the **Devine Range**, then focus on staying within that 10% window rather than hitting a specific digit.
**Reference:** *Piers, L. S., et al. (2000). Is there a “perfect” body weight? International Journal of Obesity.*