Research has shown that if you have ADHD, spinners and other fidget items will most likely help you concentrate.
Researchers used a grounded theory -approach to reveal patterns in physical properties managing attention and emotion through physical activity such as use of Fidget Widgets (32 exemplars of these behaviors and objects).
Analysis revealed evidence of self-regulation towards achieving calm, focus, and creativity.
Authors: Michael Karlesky NYU Tandon School of Engineering, New York City, USA,
Katherine Isbister Jack Baskin School of Engineering, University of California Santa Cruz, Santa Cruz, California, USA
https://dl.acm.org/inst_page.cfm?id=60024941&CFID=1002696773&CFTOKEN=55187345
Bruce Y Lee, a professor of international health at the Johns Hopkins Bloomberg School Health, mentioned in a Forbes article in May: Fidgeting, a useful ritual has a purpose and potential benefits.
It depends on the bearings--the
friction between the spinner and the central ring, which will slowly stop it. For details on angular momentum and the friction of the bearing that causes a torque on the spinning bit
that transfers the angular momentum of the initial spin to whatever is holding it see: https://www.forbes.com/sites/chadorzel/2017/06/18/how-long-would-a-fidget-spinner-spin-in-space/#74f66141552d
Established: 1996 