I had my 36 students in first period each make a file with their topic on the cover. (edutopia.org)
Even accounting for these factors, a woman's first period after baby while breastfeeding depends a lot on the woman herself. (pumpables.co)
It helps for me, especially in the morning, because I don't want to get to my students during first period in the midst of a sugar crash. (atasteofmadness.com)