A deep tissue massage is similar to a Swedish massage, however, the massage therapist uses more pressure during the massage to release muscle tension. During the massage, the therapist will focus more on the deepest layer of the muscles. They also focus on the tendons and the protective layer that surrounds the joints, bones, and muscles, called the fascia. Deep tissue massage has a few benefits. There have been studies that have shown that when a person gets a deep tissue massage for 45 minutes or more, it can actually cause their blood pressure to decrease. A deep tissue massage can also relieve stress. During the massage, stress hormones are reduced and the heart rate increases. This triggers the release of serotonin and oxytocin, which promotes a deep relaxation.