Manly Health and Training"In 1858, Whitman published a 47,000 word series called Manly Health and Training under the pen name Mose Velsor.[40][41] Apparently he drew the name Velsor from Van Velsor, his mother's family name.[42] This self-help guide recommends beards, nude sunbathing, comfortable shoes, bathing daily in cold water, eating meat almost exclusively, plenty of fresh air, and getting up early each morning. Present-day writers have called Manly Health and Training "quirky",[43] "so over the top",[44] "a pseudoscientific tract",[45] and "wacky".[40]"
(Wikipedia)
https://en.wikipedia.org/wiki/Walt_Whitman#Early_career