Should I try 5:2 but analyze: restrictive days impact? Map 5:2: two very low calorie days, five normal days, experience. Calculate: 5:2 vs. daily IF vs. adherence. Show me the 5:2 reality: very low calorie days are challenging. Give me the truth: 5:2 works for some but not all. Include: whether 5:2 suits me, what 500 calorie days feel like, if sustainable.