Work out fasting autophagy timeline instantly with clear inputs, formula shown and shareable results.
Maps elapsed fasting hours onto the recognised metabolic phases, with glycogen depletion arriving sooner when activity is higher.
Fasting phases
Absorptive 0-4 h, post-absorptive to about 12-18 h while liver glycogen lasts, early ketosis 16-24 h, established ketosis with autophagy signalling beyond 24 h
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Not directly in humans without tissue sampling; the timeline reflects animal work and indirect human markers, so treat it as indicative.
Yes. Training depletes liver and muscle glycogen faster, which brings forward the shift to fat oxidation.