[jwr]

Lots of confusion here. I really can't force myself to believe that training my grip strength with a small spring-loaded tool will extend my life and make my brain work better.

What I do know, though, is that my grip strength is fantastic, even though I don't squeeze any spring-loaded thingies. It's a side effect of doing regular deadlift exercises, as part of my strength training (roughly based on 5x5).

I also don't find it hard to believe that my strength training does bring benefits. Some are certain: life is much better when you're strong. Some are less certain, like living longer.