Popular options include 16:8, 14:10, or a gentle 12‑hour window for beginners. Morning exercisers may prefer an earlier window to fuel training, while night owls might slide later. Consistency across the week matters more than the exact numbers. Start conservatively, then adjust if energy dips or social commitments become unnecessarily difficult.
During fasting hours, focus on water, black coffee, or unsweetened tea. Consider a pinch of salt in water if lightheaded, especially in hot climates or with intense training. Hunger often arrives in waves; wait ten minutes before deciding. Track clarity, mood, and productivity. The goal is steadiness, not suffering, and a calmer relationship with appetite.
Strength or high‑intensity sessions tend to feel better near the start of your eating window, when you can refuel with protein and carbs. Easy zone‑two cardio often suits true fasted hours. If performance tanks, eat earlier, not harder. Adjust, note outcomes, and prioritize recovery so training gains complement, rather than collide with, your schedule.