Does Shoveh Lechol Nefesh Change?
[Shulchan Shlomo 511:footnote 3]. Parenthetically a five minute shower uses about 15-25 gallons of water) or are the rules set down by Chazal regarding shoveh lechol nefesh unchangeable.
Cold Shower
(From http://www.theyeshivaworld.com/torah_archives.php “Showering on Yom Tov”, Rav Moishe Dovid Lebovits/Rav Benzion Schiffenbauer Shlita/Piskei Horav Yisroel Belsky Shlita Reviewed by Horav Yisroel Belsky Shlita)