Dear Reader, How long have you gone without food? Every year I do a Fasting Challenge. I spend a set amount of time fasted, engaging in demanding physical activity. Previous editions:2022: 24 hours fasted, 34km marched2023: 48 hours fasted, 30km marched per day2024: 5 days (120hrs) fasted, staggered marathon run over 4 days2025: 4 days fasted, 2 days hill hiking almost 70km This year I'm fasting from Wednesday 15th July to Sunday 19th and I'll be sleeping rough in the forests around the...