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 may prove useful for bosses to recruit staff, with the greeting handshake a tell-tale sign of braininess.
The team now wants to establish if trips to the gym or lifting weights at home can improve brain power.
Study leader Dr. Joseph Firth said: “We can see there is a clear connection between muscular strength and brain health.”
“What we need now are more studies to test if we can actually make our brains healthier by doing things which make our muscles stronger — such as weight training.”