Explain Like I'm Five - Eli5 Mini Podcast

If we breathe out carbon dioxide, why does CPR work? Why does modern CPR training de-emphasize rescue breaths? CPR manuals talk about doing 100-120 chest compressions per minute - why so much faster than the average pulse of around 60-80? What does Michael Jackson have to do with CPR? Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: derstherower, voijarisa, cakeday173, marconidas, vaingloriou5, mavetju, joetomic, cashmoneykat, tezoatlipoca and rumble_n_the_bronchs To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter: https://www.twitter.com/eli5ThePodcast/ or send us an e-mail: ELI5ThePodcast@gmail.com