Thai massage

Background
Thai massage is a type of massage in Thai style that involves stretching and deep massage. It is known in Thailand as "nuat phaen boran" (Thai: นวดแผนโบราณ, pronounced: [nuɑt pʰɛn boraːn]), which literally means "ancient-style massage"; or simply "nuat phaen thai" (นวดแผนไทย). Thai massage originally comes from India and is based on Ayurveda and Yoga. It is said that the massage style was brought to Thailand by Shivago Komarpaj over 2,500 years ago.

"Nuat phaen boran" is the Thai name for a type of bodywork that originated in Thailand (nuat=massage, phaen=style, boran=ancient). Thai massage is also known as northern-style Thai massage, Buntautuk style, Old Medicine Hospital Style, traditional Thai massage, Traditional Thai Medical Massage, Thai Yoga, Thai Yoga Massage, yoga massage, Thai classical massage, Thai bodywork, passive yoga, or assisted yoga.

Although Thai Ayurveda and traditional medicine come from India, nuat phaen boran is primarily based in the northern Chiangmai region of Thailand. Practically every practitioner who uses this term is either trained in Chiangmai or trained by someone who was trained in Chiangmai. The oldest school for Nuat Boran is "The Old Medicine School," also called the Shivago Komarpai School and Buntautuk Hospital Massage Program.
This program was popular among tourists who wanted to learn massage in Chiangmai during the 80s and 90s.
The founder is the renowned grandmaster of Traditional Thai Ayurvedic Medicine, Aachan Sintorn Chaichgun.
Acharn Sintorn oversaw daily classes in Thai massage for over 30 years before he passed away in 2005. His family and eldest sons Suthat and Wasson continue his work to this day.
Acharn Sintorn is a product of the Wat Po System from the 1950s.

The Old Medicine School was a pioneer in teaching non-Thais a short course in the form of a ten-day program called "Nuad Boran," which was easy for people who did not speak Thai to learn.
The course was primarily  technique-focused with little emphasis on theory as a result of language barriers.
Many non-Thais misunderstood the whole thing and thought that the 10-day course was the sum total of traditional Thai medicine.
In reality, the actual physical training for a traditional expert or doctoral candidate in massage is approximately 2 years long. The basic form of Nuad Boran taught in short form serves as an introduction to the art of healing as a modality.

There are as many as 7-10 different regional variations of Thai massage.  Many of these variations claim exclusivity and compete with each other for students and for recognition; nevertheless, the Thai government is trying to establish a standard among all these different schools.

For example, in the northern style there is more focus on stretching movements, while the southern style emphasizes acupressure.

How it works

The recipient wears loose-fitting clothing and lies on a mat or firm mattress on the floor.
The practitioner leans against the recipient's body and uses both hands and arms to apply firm rhythmic pressure to nearly every part of the recipient's body. The massage follows the body's "Sen" energy lines ("Sen" is similar to the Chinese meridians).
In some positions, the practitioner's legs and feet are used to stabilize the recipient's body or extremities, while in others it is the practitioner's hands that stabilize the body while the feet do the actual massaging.
No oil is used, but sometimes an herbal compress is used to warm and soothe the recipient's body.
A full Thai massage session is about 2 hours long and includes pulling on fingers, toes, ears, etc., and walking on the recipient's back in a rolling motion. There is a standard procedure and rhythm to the massage.

In Sweden, however, it's worth noting that 95% of all Thai massage venues offer 1-hour Thai massage, for the simple reason that Sweden is expensive.
Of course, you can ask for 2 hours and they'll probably just be happy that you care so much :) (and are willing to pay twice as much)