<br><div><img src="https://www.telegraph.co.uk/content/dam/health-fitness/2026/09/25/TELEMMGLPICT000504616542_17903452377860_trans_NvBQzQNjv4BqqVzuuqpFlyLIwiB6NTmJwfSVWeZ_vEN7c6bHu2jJnT8.jpeg?impolicy=Twitter-Standard" style="width: 100%" /><div>A longevity expert hoping to reach 120 follows this fasting regimen twice a year – and says it can ‘reset’ the body</div></div>