If you're an athlete – or work with athletes – improving power in only the sagittal plane will only get you so far. To be truly powerful, in every direction, you need to train in multiple planes.
The crossover sled drag is an awesome tool to train in the frontal (side to side) plane. This explosive move is just like the first step that aspiring NFL players take when they test their lateral movement at the NFL combine.
Heavy crossover sled drags also train your backside like nothing you've ever done before and leave you super sore when you stumble out of bed the next day.
Those aches and pains, that annoying inflexibility, that injury that flares up whenever you try to deadlift a number that's higher than your IQ – all of it could be the result of tight or inflamed fascia.