Mumbai entrepreneur Abhishek Agarwal says he went without food for nearly four days as a personal birthday challenge. He described the 90-hour fast as a test of willpower, while medical guidance cautions that prolonged fasting is not appropriate for everyone.
Agarwal wrote on LinkedIn that he sets himself a difficult challenge each birthday. This year, he wanted to find out how he would respond to 90 hours without food, saying that meals and digital content are now available almost instantly. He said the first day felt easy, the second brought regret and a longing for food delivery, and he described the third as “silence.” On the fourth day, his birthday, he said he had the clearest mind he had experienced in months.
After the fast, Agarwal wrote that people may be able to tolerate more discomfort than they expect and said he felt stronger. Photos accompanying his post showed him doing yoga or exercise and eating a meal. Reactions ranged from praise for his discipline to reminders that a personal challenge must be distinguished from the body’s needs. One commenter mentioned completing a 36-hour fast and considering a longer one.
His post is a personal account, not a medical study. Mayo Clinic says fasting is not suitable for everyone and recommends discussing it with a health professional in light of individual health needs. NIDDK separately notes risks for people with diabetes, including changes in blood glucose and dehydration. Agarwal’s experience alone does not establish that a 90-hour fast is safe for others.