I do this... but then I get overwhelmed and crash.

I am not bipolar but at one point I had been dxd bipolar. Now they decided I dont fit any label... But I have episodes very similar to hypomania and I can and do induce them myself. Mostly with caffeine, excessive stimulation, certain stress situations and people... Breathing a certain way will also do it... certain types of music...

It sounds strange but then, of course, all psychological states probably can be induced some way or other.