TIL clenching my right hand might help form a stronger memory of an event or action, and clenching my left hand might help me recollect the memory later. User rollandburn, in the Today I Learned (TIL) subreddit, 14 Aug 2019
Right hand clenching (left hemisphere activation) aids in pre-encoding of memories, and left hand clenching (right hemisphere activation) aids in pre-recall. User Lightfiend, in the Psychology subreddit, 23 Oct 2013
Getting a Grip on Memory: Unilateral Hand Clenching Alters Episodic Recall. User shrillthrill, in the Nootropics subreddit, 07 May 2013
Clenching right fist may give better grip on memory User cherylferraro, in the Reddit Science subreddit, 25 Apr 2013