Clench Your Fist to Boost Your MemoryA built-in cheat code for your brain is in your palms.

From the show

Practical Body Science

Unilateral hand clenching can temporarily enhance your ability to learn and recall information. Squeezing your right hand before learning activates the brain's left hemisphere to encode a memory. Later, squeezing your left hand activates the right hemisphere to aid in retrieval. This simple sequence offers a science-backed hack to make your mind more effective when you need it most.