People with a strong handshake are more intelligent and have better memories, a study suggests.
Researchers say muscular strength, measured by hand grip, is an indication of how healthy our brains are.
The University of Manchester analysis of 475,397 people from across the UK found stronger people of all ages performed better in every test of brain function. That included reaction speed, problem solving and memory.
The results, published in the journal Schizophrenia Bulletin, may prove useful for bosses recruiting staff, with the greeting handshake a telltale sign of braininess.
Weak grip has been linked to a higher risk of heart-disease death and falls and fractures in OAPs.
The latest study accounted for differences in age, gender, weight and education.
The team now wants to establish if trips to the gym or lifting weights at home can improve brainpower.
Study leader Dr. Joseph Firth said: “We can see there is a clear connection between muscular strength and brain health.”