I know many find yoga etc. great for relaxation, personally I find it infuriatingly slow so it stresses me out more. Liked ballet, contemporary dance and pilates but not yoga.
My stress management is iron suppliments, as many as I can put on the end of a bar and lift. Every shred of stress, aggression etc. is used to fuel the workout until in the end it's all gone.
Pace of activity is personal and something being too slow is as infuriating as too fast. However I expect that yoga being too slow for me shows a lack of mental balance in me that is present in others.
There is some scientific background to this as well. There have been a number of studies watching peoples reaction to metronomes at different speeds. Too fast made people simply lose focus and it became a background annoyance, a little slower and it was exciting, moderate produced calm, slower boredom and too slow meant people were impatiently waiting for each tick of the device. Most people were clustered together regarding ideal speed ranges, there were outlyers but not many. So if you are like me and use high intensity to calm and calming intensity winds you up, you're weird. Nothing wrong with that, though I may be biased.