There is some evidence that lack of sideways flexibility in the joints contributes to synovitis in climbers. A common recommendation is to regularly twist and s

There is some evidence that lack of sideways flexibility in the joints contributes to synovitis in climbers. A common recommendation is to regularly twist and stretch the finger joints like this https://www.youtube.com/watch?v=IMO__OrzM_U https://www.youtube.com/watch?v=IMO__OrzM_U . Perhaps cracking the joints has a similar effect.