As a brand new season of Physical 100 arrives, dating rumors are on the horizon for a fan-favorite. Last year, the Netflix show shot to fame as some seriously impressive sporting stars went head-to-head. Now, one fitness fanatic is potentially showing his softer side as Yun Sungbin and Jihyo dating rumors swirl. Yun Sungbin rose to fame as a Physical 100 season 1 contestant. As soon as he entered the room on the Netflix show, he struck fear in his castmates who describe him as a “beast,” a “tiger,” adding “his shirt might rip.” Yun Sungbin is a former Olympic skeleton player who wanted to shar…