I teach (mainly US) healthcare policy and like to start class with a song to pump myself up (and maybe wake up the students, its a morning class). tMG is my favorite, but I can't think of a song that fits my subject. Our class covers things like insurance, epidemiology, human rights, healthcare provision, welfare, and public health. I think it is a weird request, but does anyone have any ideas?

As a second question, I do a half of a lecture on mental health (I include mental health in many other lectures, but this one focuses on de-institutionalization). What is the tMG song about mental health or even substance abuse might work as a song of the day for a policy class?