Alex Rodriguez enjoys challenging workouts with his girlfriend, fitness expert Jaclyn Cordeiro. Their relationship appears to be flourishing, with Cordeiro's fitness prowess a match for A-Rod's.Rodriguez recently took to Instagram to share a video of himself and Jaclyn participating in a summer core challenge. View this post on Instagram Instagram PostAfter the video was posted, fans made fun of Rodriguez for what they perceived as blunders. They also pointed out that his form was far from perfect.Here are a few of the reactions from fans:A fan's reactionA fan's reactionA fan's reactionA fan's reactionA fan's reactionA fan's reactionA fan's reactionA fan's reactionAlex Rodriguez and Jaclyn Cordeiro's love storyJaclyn Cordeiro and Alex Rodriguez's relationship has developed since they were first spotted together in October last year. The couple has often been spotted out on dinner dates with their extended family in various Beverly Hills neighborhoods.On Instagram, Cordeiro recently highlighted the importance of the former Yankee in her life and expressed her love for her boyfriend. View this post on Instagram Instagram Post