Apparently people have been experimenting with magnets in football helmets for several years now, albeit much larger ones: https://leaps.org/this-brain-doc-has-

Apparently people have been experimenting with magnets in football helmets for several years now, albeit much larger ones: https://leaps.org/this-brain-doc-has-a-repulsive-idea-to-make-football-safer/particle-3 https://leaps.org/this-brain-doc-has-a-repulsive-idea-to-mak...