"A body double is a friend, [teacher, parent, classmate,] or partner who works simultaneously, either in the same room or virtually through videochat platforms. Having another person in the same physical or virtual room can help you with productivity because you have someone present to check in with and keep you accountable. Body doubling is a support activity for ADHD that can be easy to do and cost-free."
From CHADD.org
(Children and Adults with Attention-Deficit/Hyperactivity Disorder)