To each volunteer, after 2 questionnaires, sham techniques will be performed to this group. The investigator will mimic the technique contacts without actually performing any type of tissue traction or compression, maintaining contact for the same amount of time described in the refered techniques. Following the technique, volunteers will answer the same 2 questionnaires shown previously.

To each volunteer, after 2 questionnaires, Diaphragm Stretching, Lower stomach mobilization and Liver pump techniques will be performed to this group. The diaphragm technique is performed 2 times with 1 minute interval, with the duration of 10 respiratory cycles. The lower stomach mobilization and liver pump techniques are performed one time, for 5 minutes each. Following the technique, volunteers will answer the same 2 questionnaires shown previously.

To each volunteer, after 2 questionnaires, Lower stomach mobilization and Liver pump techniques will be performed to this group. These 2 techniques are the same ones as described for the experimental group A. Following the technique, volunteers will answer the same 2 questionnaires shown previously.

Diaphragm Stretching:

The participant is seating down and the researcher will be behind, placing their hands on the inferior costal border. Cephalic traction is performed during inhalation, remaining during exhalation. Procedure is repeated 2 times, for 10 respiratory cycles, with 1-minute intervals.

Inferior Mobilization of the Stomach:

The participant is seating down with slight flexion of the torso, while the investigator stands behind them, placing the thumbs on the epigastric region. The volunteer will extend their body while the researcher performs a caudal traction. This procedure lasts 5 minutes.

Liver Pump:

Participant is laying on their back, and the investigator is standing on the participants side. The researcher places one hand on the right side inferior costal border posteriorly and the other one bellow the costal border anteriorly. Researcher compresses during exhalation and releases their hands abruptly during inhalation. This procedure lasts 5 minutes.

The Neck Disability Index questionnaire (NDI) will be the instrument used to evaluate the level of incapacity caused by neck pain. The questionnaire has 10 questions about the volunteers everyday life activities. There are 6 options to each question and the participant must choose the one that applies the most to their experience. The options selected will account for a score that goes from 0 to 50. The higher the number of the option, the more incapacity is felt and reported by the participant, meaning a worse outcome.

This data will be collected by asking the volunteer their preferred option and writing it down.

The pain outcome will be measured according to the volunteers perception of pain in the cervical region by using the Numerical Pain Scale (NPS). This scale ranges from 0 to 10 and the participant must choose one number that best suits their level of current pain, 0 corresponding to "no pain" and 10 being "the worst pain imaginable to that participant". The higher the number, the worse the outcome.

This data will be collected by asking the volunteer for the corresponding number and writing it down.

One week after the intervention, the participants must answer the Global Perception of Change Scale (GPCS), which presents 7 options (from 1 to 7). The higher the number of the option, the more change was perceived and reported by the participant, meaning a better outcome. This instrument will guide the researcher to better understand if the intervention resulted in any kind of change to their initial condition.

This data will be collected by asking the volunteer their preferred option and writing it down.