12, 16, 24 or 36 hours: which fasting regime will work best for you?
Endorsed by celebrities and CEOs, and now the Prime Minister, fasting (originally followed for cultural and religious reasons) is gaining popularity as a “bio-hacking” health and weight-loss regime. Rishi Sunak has said fasting once a week is “an important discipline for me” as part of a “balanced lifestyle”. The Prime Minister does not eat anything on Mondays; his friends say he fasts for 36 hours every week, from Sunday afternoon until Tuesday morning.