For the laughs

[jonrock]

Very well could be that, macky.

On the other hand and now that you mention it, these days I do bodyweight exercises combined with isometrics: (handstand, crucifix and extended plank) pushups, one leg squats, ab wheel leg curls/inverted planks on tiptoes, sissy squats, pure isometrics with strap/handles/grenadier grips (neck, deadlifts, shrugs), etc...
Also, lots of isos ala Maxalding and Bronson.

[macky]

Well that's impressive, jonrock.  Could it be the crucifix or perhaps holding the extended Plank for too long ? 

The trashed shoulder must have a reason for it.  It's not just a bit of pins-and-needles, or slightly sore arm or shoulder from laying too long on one side.     

[jonrock]

It has happened just 2 or 3 times, lasted for a while until the shoulder was perfect in a few hours.
It has been a year or so since the last time.
Still, it is probably a combination of things: the isos without stretching, sleeping on one side, etc...

[jonrock]

Macky, you were spot on.
My girl is a physiotherapist, talking with her about this, she tells me that the isos I did heavily involving shoulders (oh presses and shrugs in my case) were almost 100% a big part of it, when I did not stretch properly afterwards.
Thinking about it, a friend of mine who is the owner of a gym used to tell me the same, that I had the tendons of the shoulder/pecs a bit shortened due to the isos.
In that time I did almost exclusively pure isos, short holds, hard...there you have it.

[macky]

Good job, jonrock.  You were onto it anyway, in your second to last post.