Overview
The Physical Health score is a composite score reflecting key lifestyle behaviours that drive long‑term health risk, functional capacity, and quality of life.
How we calculate our Physical Health score
The total physical health score is calculated as a weighted average of the scores from three key indices, based on data gathered from the YuLife app Daily Reflections, and the YuLife-calculated Hazard Ratio.
🧠 Science Behind
Daily Reflections' health questionnaire includes nearly 500 questions, each with its own relevancy period - the amount of time an answer continues to contribute to scoring.
Examples:
“Did you exercise yesterday?” – relevant for 1 day
“Do you drink?” – relevant for up to 1 year
A question only influences score calculations while its relevancy period is active.
The four domains were selected because diet, movement, sleep, pain, alcohol, and tobacco account for a large share of preventable illness and premature mortality in global burden‑of‑disease research and in clinical guidelines (e.g., WHO, national public‑health agencies):
Healthy Eating
Rest & Recovery
Tobacco Use
The YuLife-calculated Hazard Ratio
Healthy eating
This sub‑index captures behaviours and knowledge related to nutrition, alcohol, hydration, sugar/caffeine intake, and mindful eating. These factors are strongly linked to obesity, cardiovascular disease, type 2 diabetes, some cancers, and overall vitality.
Rest & recovery
This sub‑index evaluates musculoskeletal health, physical activity, and sleep - key determinants of functional capacity, pain, mental health, and chronic‑disease risk.
Tobacco use
This sub‑index focuses on tobacco and nicotine behaviours, one of the most powerful modifiable determinants of morbidity and premature mortality.
Hazard ratio
The YuLife-calculated hazard ratio is derived primarily from the steps an individual has recorded in the YuLife app. Each individual’s hazard ratio gets aggregated to form a major factor in the overall Physical Health score.
What does my score mean?
Higher scores indicate more protective behaviours and a lower level of physical‑health risk.
Scores are categorised as follows:
Score Category | Score | Explanation |
High | 𝓍 ≥ 52 | No significant risk factors. |
Medium | -32 < 𝓍 < 52 | Minimal number of significant risk factors. |
Low | 𝓍 ≤ −32 | Considerable number of risk factors. |
✨ Making use of AI
By having our AI-driven models continually scan the latest publicly available research and learn from it in real time, our burnout model is constantly being refined and improved. This allows us to design more informed question sets and apply evidence-backed weightings to both the questions and their responses. To learn more, see here.