He was an enthusiastic practitioner of boxing as well as other arts of self defence, and in 1890 co-authored, with C. Phillipps-Wolley, the classic Broad-sword and Singlestick (1890).
He was also an enthusiastic and accomplished practitioner of the Japanese tea ceremony, in the Sekishūryū style, and his writings include at least two works on the tea ceremony.
He is an enthusiastic practitioner of the Japanese martial art Shorinji Kempo.
Radial keratotomy, in which spoke-like slits are cut into the cornea to change the shape of the eye, is not always the lasting answer to myopia that some enthusiastic practitioners and patients say it is.
This is partly because enthusiastic practitioners are prone to using treatments that they believe will do good, without first having evaluated them adequately to ensure they do no (or only acceptable levels of) harm.
An enthusiastic practitioner in mixed media, he immediately took to the neo-Dadaist Fluxus movement founded in the early 1960's by George Maciunas.
Rather, the fault lies primarily with overly enthusiastic and often poorly trained practitioners who dole out the psychic medicine, as well as with medically naive readers who carry the message to unwarranted extremes.
Its enthusiastic practitioners, clad in flamboyant ski gear, prefer deep powder snow to groomed trails and jump over obstacles rather than complaining to the ski patrol about them.
Most significant, it failed to address the terror bombing of civilians and the deliberate consuming of whole cities (Dresden, Tokyo) by fire - the most enthusiastic practitioners of the latter being the Allies.