Four hands: two therapists attending one client at twice the hourly fee; the name counts hands, though in body-to-body the working surfaces are far larger.
Four hands is a count, and a slightly misleading one. The phrase comes from conventional massage, where a second practitioner simply brings another two hands to the table. In body-to-body the tools are forearms, thighs and torsos, so the arithmetic undersells what a second therapist brings: another body's worth of contact, working in the same moment.
Two therapists can work in mirror, one on each side, so both halves of the body receive matched pressure and neither is left waiting. Or they can work in relay, one travelling the length of the back while the other anchors the legs with steady weight. Most pairs combine the two. Usually one of them leads and the other answers. Many clients ask for two names who have already worked side by side, since a pair that has never practised the handover leaves gaps a client can feel.
Four hands is one client. A couple who each want a therapist are booking something else: two parallel sessions sharing a room, billed on the couple row at double the couple hour.
Two therapists with one client bill two single hours for every hour they spend in the room. Whatever the length of a pairing, half of its total goes in advance and half at the door, so the deposit on a pair equals what one therapist alone would cost for the same time. Every two-therapist booking carries that deposit, whoever the client is and however soon the start, because acceptance closes two calendars at once. A pair can stay the night as well: for eight hours with one client their doubled hour simply keeps running, and half of that night total is sent ahead.
The room needs a bed that can be reached from both long edges. The four-hand page shows the pairings, the journal on four hands examines timing, and the deposit entry explains the advance.