A social media trend called “Pinky Time,” a hand exercise that takes less than 10 seconds, is drawing attention for claims that it may hint at brain function and help lower dementia risk. The article says interest in the drill is rising as dementia rates continue to increase worldwide and researchers look for simple ways to preserve cognition over time.
The exercise starts with both hands held in front of the body, palms facing each other. The middle finger is crossed over the index finger on each hand, as if making a “fingers crossed” gesture, then the ring finger is pressed to the thumb while the pinky is moved up and down for several seconds. Videos on TikTok suggest that doing this smoothly and accurately may reflect healthy neural systems tied to coordination and fine motor control.
Dr. Shaheen Lakhan, a Miami neurologist and pain specialist, told the Daily Mail that the hands occupy a large area in the brain’s motor and sensory centers. He said skilled tasks engage multiple brain networks at once, and repeated stimulation can support neuroplasticity, the brain’s ability to adapt and form new connections. Dr. Michelle DiBlasi, who heads inpatient psychiatry at Tufts Medical Center in Boston, also told the Daily Mail that the task requires complex bilateral movement and may help the two hemispheres communicate more efficiently while reducing stress and cortisol levels.
There are still no direct studies of “Pinky Time” itself. The article notes, however, that research on hand and finger exercises has shown potential cognitive and motor benefits, including a 2025 University of Pennsylvania School of Nursing study on repeated finger exercises and a 2026 BMC Geriatrics study of 47 older adults in nursing homes with mild cognitive impairment. Even so, the experts say there is no proof the exercise prevents Alzheimer’s or dementia, and the best-supported ways to reduce risk remain regular exercise, a healthy diet, good sleep, managing blood pressure and diabetes, and staying socially and mentally active.
