You'd better believe it. The once bitter K-1 kickboxing rivals are now training together. The top UFC heavyweight contender posted the above photo to his Instagram account earlier today saying: "Badr Hari & me at mikes gym after a great training session. The REEM vs Badr III might just happen... In training." Overeem and Hari split their first two meetings, knocking each other out in both matches. Do you think this collaboration will be helpful for Overeem's career?