Zumba choreography..they send music every month and choreography every other month. We also get choreo from the Instructor website. And you can use your own choreography too!
We have a month membership fee that covers all of the above.
Zumba Gold is usually a bit simpler, and the moves are more controlled. No jumping, but still lively. My brand new class is starting as beginners but my gym class has been dancing for years so I always show both low and high impact options.
You are right about nurses, taking on everyone's woes. I have friends who will call in the middle of the night or texted me to find out how a patient is. Then there is the regularly delivered candy from patient families in appreciation.
That question won't be answered soon, I suspect. I have heard from two surgeons, from two different hospitals, that they are not really sure why WLS seems to often "cure" type 2 diabetes. But it happens a large percentage of the time. I think the number could be 85% or more, but I don't remember exactly. Some people get the surgery JUST FOR THAT!