Does the thought of going to the gym with your boyfriend have you picturing his Grunt Face while heavy lifting? Or constantly waiting for your girlfriend to finish up on the treadmill bring tears of boredom to your eyes? These are some of the reasons that discourage couples from exercising together. But did you know that separate workouts can actually be doing your relationship a disservice? Couples exercising together strengthen both their bodies and relationship. Working out as a couple can make the most important muscle of all stronger: the heart. Get these benefits of working out as a couple.