Physiques DatabasePhysiques DatabasePhysiques DatabasePhysiques DatabaseDutch athletics competitor - Instagram Profile
Femke Bol broke the world indoor 400 metres record twice in two weeks in 2024, ending on 49.17 seconds at the World Indoor Championships in Glasgow. Her main event has been the 400 m hurdles, where she won world titles in Budapest in 2023 and Tokyo in 2025 and Olympic bronze in both Tokyo and Paris. Her most famous run came in the mixed 4x400 m relay at Paris 2024, when she hunted down the leaders on the anchor leg to snatch gold. She has since announced a move up to the 800 metres.
At 184 cm and 65 kg she is unusually tall and light for a one-lap runner, and long legs help over hurdles, covering the gaps between barriers in long, economical strides. The scan's body-fat estimate, about 26%, is above the figures usually quoted for elite sprinters; what stands out is how little weight that tall frame carries.
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A visual estimation of the areas of your body with a higher likelihood of containing more fat than others -- not a measurement. This feature is experimental; treat the heatmap as an indication, not a clinical finding. Accuracy is best at the extremes of body-fat percentage, weaker in the middle, and atypical body shapes (athletic builds, pregnancy, etc.) may not be modelled well.
| Metric | Value vs reference | Reference | Reading |
|---|---|---|---|
| Lateral lean?Accurate to about ±2-3° in a single scan -- camera tilt is the main confounder. Trending against your own history (same setup) is more reliable than the absolute number. For best accuracy, make sure the camera was level while scanning. | -0.4° | 0° = vertical (frontal knees-to-head axis) | natural — upright |
| Head forward offset?Accurate to about ±1-2 cm in a single scan -- camera tilt and head rotation (looking up / down / sideways) are the main confounders. Trending against your own history (same setup) is more reliable than the absolute number. For best accuracy, look straight ahead and keep the camera level while scanning. | Upload a side picture to get this metric | 0 = ear in line with the spine axis (no forward head) | — |
| Forward/back lean?Accurate to about ±2-3° in a single scan -- camera tilt is the main confounder. Trending against your own history (same setup) is more reliable than the absolute number. For best accuracy, make sure the camera was level while scanning. | Upload a side picture to get this metric | 0° = vertical (side knees-to-head axis) | — |
| Shoulder tilt?Accurate to about ±2-3° in a single scan -- camera tilt is the main confounder. Trending against your own history (same setup) is more reliable than the absolute number. For best accuracy, make sure the camera was level while scanning. | +1.7° | 0° = level (frontal) | natural — balanced |
| Hip tilt?Accurate to about ±2-3° in a single scan -- camera tilt is the main confounder. Trending against your own history (same setup) is more reliable than the absolute number. For best accuracy, make sure the camera was level while scanning. | -0.4° | 0° = level (frontal) | natural — balanced |
| Segment | Left width | Right width | Δ vs symmetric | Reading |
|---|---|---|---|---|
| Upper arm Biceps / triceps | 8.9 cm | 8.0 cm | +11.0% | natural — left side larger |
| Forearm Forearm flexors | 6.2 cm | 7.3 cm | -16.8% | notable — right side larger |
| Thigh Quadriceps | 15.0 cm | 15.4 cm | -2.3% | natural — balanced |
BodyWHAT uses its own proprietary, neural-network-based technology to estimate your body-fat percentage and other body-composition metrics directly from your photos. These in-house models are combined with established anthropometric methods; the published methods and reference ranges below inform and calibrate those estimates.
BodyWHAT's figures are estimates for general fitness and education — not medical advice or a diagnosis. They draw on established methods and published reference ranges:
Always consult a qualified healthcare professional before making decisions about your health.
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