Fasting? Done right, it's cellular repair gold... autophagy kicks in around hour 16, clearing junk, boosting mitochondria.
My top tips:
1. Prep 2-3 days: Cut carbs, up fats, eases transition.
2. Electrolytes key: ½ tsp sea salt hydrogen water hourly.
3. Bone broth breaks: Sip slow post-fast, no solids first 2 hours.
4, Walk light: 5k steps, no HIIT, preserve muscle.
5. Sleep deep: Blackout, 65°F room.