Hence the 3 email rule which states if the email back and forth goes to 3 emails break the chain and try another method such as a phone call or a face-to-face meeting.
Another common type of massage, so-called deep tissue, tends to be more targeted to problem muscles and includes techniques such as acupressure, trigger-point work (which focuses on little knots of muscle) and "deep transverse friction" where the therapist moves back and forth over muscle fibers tobreak up scar tissue.
And there are a lot of upfront investments that have to be made in research and capital and so forth, a lot of barriers for companies that are trying tobreak in.