Primespan Tools
Intermittent Fasting Optimizer
Get a personalized eating window based on your sleep, activity timing, and goals.
Your personalized eating window will appear here
- Time-restricted eating (TRE): Aligns eating with circadian biology. Earlier windows show better insulin sensitivity and metabolic markers.
- Chronotype adjustment: Late chronotypes shifted +45 min, early chronotypes -30 min.
- 3-hour buffer before sleep: Based on research linking late eating to impaired sleep architecture and glucose clearance.
- Sources: Wilkinson et al. (2020) | Ravussin et al. (2019)
Free to embed on your site:
Estimates based on population-level data. Individual responses vary. Not medical advice.
