When we were yungeleit,” Reb Aizel related, “we studied, standing up, the entire night. And in the morning, without fur coats (not because we didn’t own them, but because we didn’t want to wear them) — we took axes to chop through the ice and toivel [im merse]. Only after that would we daven. We cannot expect this from yungeleit today, but learning and davening are doable nowadays, as well. ”
As I Heard Them, Vol. 1, pp. 311-312, no. 50