The last time you did shots, the night started with a kamikaze and ended with a karaoke solo. (“What If God Was One Of Us,” naturally.)

Toss one back without fear of shame during a Japanese white charcoal massage at The Spa at Four Seasons Hotel Chicago.

The treatment starts with a shooter of charcoal powder mixed with water. Don’t be scared — the gray-tinged concoction, said to settle your digestive system, goes down smooth. On the massage table, your therapist uses rice bran oil and pressure-point techniques to release even the most hidden aches and pains.

In the midst of the bliss, you’re treated to a back scrub made from a mix of crushed Japanese pine needles, sea salt, and oil. Heat is applied, and your license to zone out is officially granted.

You’ll sing its praises.

The Spa at Four Seasons Chicago Hotel, 120 East Delaware Place, at Michigan Avenue (312-649-2340 or fourseasonschicago.com).

Photo: Aaron Mason / Getty Images