This article is an excerpt from our Sefer
Buy me here or on Amazon.com
Yom Kippur Katan:
Many are accustomed on Erev Rosh Chodesh Elul to fast and recite the Seder of Yom Kippur Katan, even if they are not particular to do so the rest of the year. However some meticulous men are not accustomed to do so even on Erev Rosh Chodesh Elul, [and so is the Chabad custom].