Bodybuilder and Bravo reality star Greg Plitt died at the age of 37 on Saturday. According to authorities, Greg was fatally hit by a Metrolink train [1] in Burbank, CA, in what is believed to be an accident. "It does not appear to be a suicide," Sgt. Scott Meadows told People. "A camera was seized as evidence, but it's unclear who it belongs to — the victim or a witness. From the sound of it, he was filming something, but I can tell you that no filming permit had been issued."

As a fitness expert, Greg made a name for himself on Bravo's Work Out. He is also featured on the cable network's Friends to Lovers, which debuted last week. "This is a terrible tragedy," Bravo said in a statement on Saturday. "Our thoughts and deepest sympathy are with Greg's family and friends."

There was a lot more to Greg than his reality TV career. According to his bio on Bravo's website [2], Greg was "a graduate of the United States Military Academy at West Point" and "went on to become a Captain and Ranger in the US Army." In a heartfelt tweet [3], Andy Cohen touched on Greg's larger-than-life persona, writing, "We couldn't take our eyes off Greg Plitt after we cast him on 'Work Out' — [he] was as nice as he was beautiful. [He] seemed invincible, like Superman."