Touching or massaging any part of the human body's skin can lead to sexual arousal, some parts of the skin more than others, and there are differences between persons.
Some years ago I read a social media post of a woman waxing euphorically about having an orgasm every time a particular masseur at a prestigious spa in the Italian Alps massaged the area above her coccyx.
A whole-body massage means the massage of the skin of the whole body, but the Minister of Public Health now wants to limit it to 99.99 of the skin, with him being the judge about what 0.01 percent must be left out.