This post is brought to you by the makers of MOTRIN® This past weekend, I joined 10,300 of my closest friends in Ottawa to run a 5K race. Obviously, I don’t really have that many friends, but since running is largely a solitary pursuit, it always feels good to join a community of runners all chasing down a common goal. I play a lot of head games to motivate myself to keep running, but when I’m in a race I rely on the people I’m with to push me through. Sometimes it’s friends, sometimes it’s …