Explore how four inputs affect Nyxova’s own age model. Its output is illustrative and is not a validated estimate of your biological or cardiovascular age.
The code applies fixed reference values and year adjustments, then combines them using the weights below. These are Nyxova model settings, not weights established by the listed studies. No validation of this combined model is documented here.
| Metric | Weight | Previously cited background — not validation of these weights |
|---|---|---|
| VO₂ Max | 40% | HUNT Fitness Study (Nes et al., 2013); Kodama et al. meta-analysis (2009) |
| Resting Heart Rate | 30% | HUNT Study; Cooney et al. systematic review (2010) |
| Sleep Efficiency | 20% | Buysse et al. (2008); Cappuccio et al. meta-analysis (2011) |
| Activity Level | 10% | Wen et al. Lancet (2011); Lee et al. PLOS Medicine (2012) |
The references above are background reading. They should not be read as validation of this calculator’s weights, year adjustments or displayed range.
The displayed band is a fixed three years either side of the rounded output, with a lower limit of 18; it is not a confidence interval. Input changes demonstrate how this model behaves, not a proven change in biological age.