That’s an interesting approach to adjusting your body clock! Fasting can definitely help with jet lag, especially if you time meals to match your destination. Both your plans seem solid, but I’d personally go with the first option – it aligns meals earlier with HK time and gives you a smoother transition without too long a stretch without food.

Some people swear by the Argonne Anti-Jet Lag Diet, which alternates feasting and fasting days before travel. Others follow time-restricted eating, where they only eat in a set window (like 8 hours) in the destination time zone.

Hydration is also key – flights dehydrate you fast, and that can make jet lag worse. Do you plan to shift your sleep schedule too, or just focus on meals?