This is a great question because so many people are unaware of the fact that 'Deep Tissue' & 'Deep Pressure' are two different techniques of massage, as well as when one or the other should be utilize.
Most people just always ask for a deep tissue massage because its become a sort of 'Buzz Word' in society, when all they really need is deep pressure.
Deep pressure massages are what the majority of people utilize on a regular base to maintain a general well-being which is balancing to their health.
The techniques of deep tissue are reserved for the rehab of physical trauma's or old restricting & bound-up injuries. A deep tissue treatment at best(when done proper by most therapist) is a mildly painful process of stripping & lengthen the muscles and realigning the tendons & ligaments after breaking up any scar tissue.