Since the early days when the sport was anything but a mainstream endeavor, the MMA industry has thrived and survived through various websites, forums, and, perhaps most importantly, social-media platforms. Fighters interact with fans, each other and many more through the likes of Twitter, Facebook and Instagram, which helps outsiders get a deeper look into the minds of the athletes.
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UFC 290 reactions: Winning and losing fighters on social media – MMA Junkie