Some people might remember the opening credits for the 1970s show "Bionic Woman," where Jaime Sommers squeezes a tennis ball so hard that she busts it. You might not be able to squeeze a tennis ball ...

Grip strength is essential for daily activities and is a key indicator of health and longevity. Simple exercises, such as ball squeezes, towel twists, dead hangs, and farmers' carries, can build grip ...