There are a lot of important technical cues used to get athletes in better position. Pointing the toes helps with firing the quads. Squeezing the butt helps with engaging the core. Pushing the knees out helps stabilize the hips. And smiling makes you stronger!
Ten rounds of:
DB farmer carry (heavy) for 25 meters
sprint 50 meters
*DB carry 25 meters and set DBs down, then sprint back to start and touch line, then sprint back to DB's and go again