Raising the American Weakling
Many of the comments here seem to be focussing on increasing grip strength but that misses something the article could have delved into more.  Grip strength is strongly correlated with health and longevity, but its not directly causal - simply increasing your grip strength wont really add many years to your life.  Instead grip strength is strong correlate with overall musculo-skeletal mass and strength, which does have a highly causal relationship with health and longevity. So, focussing purely on grip strength will do more to break the correlation than give you a long life.If you want to have a healthy, long life focus on overall strength.  Squats, deadlifts, odd-object carries etc.  If you're new to lifting, have someone who isn't show you proper form.  Or just read Starting Strength by Mark Rippetoe.  Its the bible of heavy lifts.Source: I can deadlift more than 3 times my bodyweight while still having a 7 min mile.