Tekashi 6ix9ine, the 29-year-old rapper known for his colorful style and wild public life, will begin a 3-month prison sentence on January 6 next year. Despite the jail time, he is not worried. Instead, he plans a big fitness change by dropping from 190 to 120 pounds. His unusual diet? Eating only one box of Oreo cookies each day while in prison. Along with the jail term, he faces 12 months of supervised release including a strict mental health program that focuses on anger management. Drug treatment will also be required after authorities found drugs during a raid on his house earlier this year. Tekashi’s problems started with a racketeering case involving a gang. He cooperated with prosecutors, earning the "snitch" label, which will likely keep him separate from the general prison population for safety. Tekashi told TMZ that being isolated is not a punishment but an opportunity to focus on himself physically and mentally. His plan has caused a stir on social media, with many doubting the safety of his Oreo diet in jail. Still, he looks to use prison as a reset after years of legal troubles and controversy. Fans and critics alike will watch his prison time closely. With mandatory anger management, drug programs, and his dramatic weight loss goal, Tekashi 6ix9ine stays in the spotlight for music and chaos. If he succeeds, his release next year could mark a new start in his turbulent career.