I wish I could cite a source for this; assume there’s some inaccuracy in the telling.
I remember hearing about a study in which three isolated groups were put in rooms for about one hour. One group was told to wiggle their index fingers as much as they could in that hour. One group was told to think hard about wiggling their index fingers for that hour, without actually wiggling their fingers. And the third group was told to just hang out for that hour.
The physical effects of this exercise were examined directly afterward, and the first two groups checked out (almost?) identically.
I wish I could cite a source for this; assume there’s some inaccuracy in the telling.
I remember hearing about a study in which three isolated groups were put in rooms for about one hour. One group was told to wiggle their index fingers as much as they could in that hour. One group was told to think hard about wiggling their index fingers for that hour, without actually wiggling their fingers. And the third group was told to just hang out for that hour.
The physical effects of this exercise were examined directly afterward, and the first two groups checked out (almost?) identically.