there are 2 type of cracking. from guitar i have same, its ok, some fluid goes out because ur tendons are longer and there is some space. something like that (i

there are 2 type of cracking. from guitar i have same, its ok, some fluid goes out because ur tendons are longer and there is some space. something like that (i am not medical person ofc). then there is 'forced' cracking, which will be more difficult to do because its actually going to crack things that are un healthy. it destroy some soft crap between the bones. both are not healthy but first is much less destructive and wont lead to chronic issues as fast/often as the later which much more often has that result later.. the second forced one u rly need to put some pressure or pull them hard etc its not about getting rid of that stiffness u talk about. i did that for 15 years and my fingers/hands are fine. (stopped playin so that also went away eventually, mostly)