Even the saltiest sailors know that it takes an expert to tackle heavy-duty knots.

Set a course for relaxation via the Potomac Massage Training Institute. The massage school offers 60- and 90-minute treatments at eye-popping bargains.

For your basic knot, the student clinic practices Swedish techniques under the supervision of an instructor. The graduate clinic deploys fully qualified practitioners to bust tougher kinks (using deep tissue and more nuanced skills). The professionals can give any knot the slip with massage therapy, hot stones, prenatal massage, and just about any other specialty.

They keep costs low by eliminating frills, which means no heated beds, designer oils, or fancy candles, but you’ll still emerge less tense and with nary a ball of tension in sight.

Time to take your bow.

Potomac Massage Training Institute, 5028 Wisconsin Avenue NW, between Fessenden and Garrison Streets, suite ll (202-686-7046 or pmti.org).

Photo: Getty Images