Did Tudors wear knickers? What’s a codpiece all about? What about periods and hygine? I know these are all questions you have been having sleepless nights over so watch this and learn the answers, and Put those niggling questions to bed once and for all.
Oh PS, I also meant to tell you this nugget of gold too: the costume designer for the BBC adaptation of Wolf Hall was told to tone down the size of the codpieces used on set, just in case the American viewers got offended. 

https://m.youtube.com/watch?v=5j_gy7Y1UDI&feature=youtu.be