[freeloop3]

This article doesn't really make a case in my opinion. The only two justifications seem to be:

> So if a joint doesn’t go through its full range—if the hips and knees never go past 90 degrees—the body says ‘I’m not being used’ and starts to degenerate and stops the production of synovial fluid.”

And,

> A 2014 study in the European Journal of Preventive Cardiology found that test subjects who showed difficulty getting up off the floor without support of hands, or an elbow, or leg (what’s called the “sitting-rising test”) resulted in a three-year-shorter life expectancy than subjects who got up with ease.

(Study here https://www.ncbi.nlm.nih.gov/pubmed/23242910)

As far as the first one, I'd say, so what? More fluid means healthier? Why?

As far as the second one, correlation doesn't prove causation. We should stop pretending this is the case with everything.

[tathougies]

I mean if you're fat, you can't do that, and that's a pretty large risk factor for dying early.