Comic 4 of volume 4, issue 1 (http://www.dhscomix.com/ocomics/ocomic.php?p=10-04)
I wonder if Col's bout of shapeshifting sickness have left him weaker than before or stronger? He currently can only stay shifted for a few hours, but surely he had to build up to that, maybe he could get better over time?
If its like exercising muscle then would surely be better to frequently exercise for shorter amounts of time, frequently, rather than keeping going until you are you are exhausted each time.
Interesting thought. I don't believe Merlin's given an in-depth view on how shapeshifting sickness works on Shapeshiters...
I'd very much enjoy something like the demonology 101 series for the DHS world. It could help answer questions like that.