I put it with the correlation to health decline and grip strength. While training pure grip strength will not keep your health from declining, there is a natura

I put it with the correlation to health decline and grip strength. While training pure grip strength will not keep your health from declining, there is a natural tendency to increase grip strength with full body exercises and strength training, which help people live longer by increasing cardiovascular health and pushing blood to our extremities. There's even some (I'm not sure how much) research into this type of full body exercise helping ward off cognitive decline... but the articles focus on the grip strength, as that's the one through factor as you use your hands in body weight exercises, kettle bells, dumbells, martial arts, climbing, etc.