The viral trend of 'boy kibble,' a simple meal of rice and ground mince, is becoming popular among young men seeking quick, protein-rich meals. However, scientists warn that this meal prep method poses serious health risks due to the potential growth of Bacillus cereus bacteria in improperly stored rice. Dr. Primrose Freestone from the University of Leicester emphasizes that cooked rice is particularly susceptible to bacterial growth if left at room temperature for over two hours. The bacteria can produce toxins that lead to severe food poisoning, with symptoms including nausea and vomiting occurring within 30 minutes to five hours after consumption. The UK Food Standards Agency estimates that there are 2.4 million cases of food poisoning each year, with Bacillus cereus being a notable cause. Experts recommend that to minimize risks, individuals should store food in smaller containers to facilitate quick cooling and avoid reheating large portions multiple times. For safe long-term storage, meals should be frozen at temperatures below -18°C (0°F). Such precautions can help prevent the serious health consequences associated with this popular meal prep trend.