How's Christian McCaffrey training to repeat his record-breaking 2018 season??
By spinning like a bunch of clothes in the dryer ... with a laser pointer in his hand!!!
TMZ Sports has learned the Carolina Panthers superstar has been hitting up NeuraPerformance in Denver in order to get his brain right for his 3rd NFL season.
We're told the way the training works is Christian shows up for a 30-to-45-minute session ... and as part of the workout, he vigorously tosses around in a machine designed to help his mind.