Popsugar Fitness Workouts The Best Workout Ever in GIFs How to Know You've Had the Best Workout Ever! September 19, 2015 by Jenny Sugar View On One Page Photo 4 of 11 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 You realize that runner's high is an actual thing. You're feeling it, baby. Love me some endorphins! Previous Next Start Slideshow WorkoutsFitness MotivationFunny Fitness