Grip strength is a stand-in for whole-body strength, and it is one of the better simple predictors of healthy lifespan. It is not about your hands, it is a window into muscle mass and function, which protect you as you age.
- Grip correlates with total-body strength and longevity in large studies.
- Muscle is metabolically protective, it buffers blood sugar and supports hormones.
- Resistance training and protein build and hold it at any age.
- It is a signal of function, staying strong is staying independent.