Popsugar Fitness Celebrity Instagrams Jennifer Lopez Alex Rodriguez Working Out With David Kirsch J Lo and A Rod's Partner Workout Is All the #FitCoupleGoals We'll Ever Need August 23, 2017 by Victoria Messina View On One Page Photo 4 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Jenny From the Block doesn't mess around when it comes to sit-ups, guys Previous Next Start Slideshow Jennifer LopezCelebrity InstagramsCelebrity CouplesAlex RodriguezWorkoutsCelebrity Fitness