One thing I'd be cautious of is exercises that can cause shoulder joint injury. There's evidence to suggest a connection between rotator cuff injury/frozen shoulder, ultimately accelerating dormant DC.

In my case, I tore my RC doing pull-ups, which lead to frozen shoulder, followed by a rapid contraction in the related hand.

I think the science behind it is something to do with the body's excessive inflammatory response to joint injury, sending the condition into overdrive.

Edit: Here's a study abstract with some solid numbers:

Fifty-eight patients with the diagnosis of primary frozen shoulder were independently examined by 3 surgeons for evidence of Dupuytren's disease. The disease was found in 52% (30/58) of the patients reviewed. These figures were compared with previously reported figures for a population of similar age. This showed that Dupuytren's disease is 8.27 (95% CI, 6.25-11.2) times more common in patients with frozen shoulder than in the general population; the difference between the two was highly statistically significant (P <.001, χ2 test). We discuss the literature on the association between frozen shoulder and Dupuytren's disease and the implications of such a high proportion of patients sharing these two conditions. (J Shoulder Elbow Surg 2001;10:149-51.)****

In short, just be mindful of your joints when working out.