Overview of Research Design This study will be a cross-sectional, single-blinded randomized control trial. This will be a single session, experimental approach in which participants who meet the inclusion/exclusion criteria will be divided into three groups: treatment group 1, treatment group 2, and control group. Group assignment will be performed using randomized concealed allocation. Participants will undergo pain pressure threshold testing using pressure algometry, followed by a cervical manipulation for treatment group 1 and a lumbar manipulation for treatment group 2. The control group will rest quietly for an allotted amount of time. Upon completion of the first intervention, a second pain pressure threshold assessment will be performed. Treatment group 1 will then receive a lumbar manipulation, while treatment group 2 receives a cervical manipulation. The control group will again rest quietly. Following the second intervention, a final pain pressure threshold assessment will be taken. The primary dependent measures will be 1) current pain intensity as reported by a verbal numeric pain rating scale, 2) self-reported stiffness, and 3) pain pressure threshold measured in Newtons.