Single-leg sled pushes and pulls involve emphasizing one leg to move the sled on each step, which is especially good if you're trying to focus on a weaker side.
An easy way to implement these single-leg sled push and pull variations is to simply perform half the distance or duration with one leg and do the second half with the other leg.
Blood on the Barbell is our new series describing workouts to do when your woman left you, your momma' don't love you, and even your dog doesn't care much for you. This time, Dan John brings the hurt and the healin'.