Study aim: To compare the effects of dry needling and cupping therapy in hamstring mucle with active trigger points Design: This study involves the voluntary allocation of participants after they sign a consent form. Randomization is performed using the block randomization method with a block size of 4 to ensure participants are balanced between the two intervention groups (dry needling + static stretching or cupping therapy + static stretching). Within each block of 4 individuals, 2 are assigned to each group to maintain balance between the groups. Settings and conduct: The initial collection of participant demographics (age, weight, height) and all assessments will be conducted by a blinded physical therapist at the Tehran Physiotherapy Clinic and Rehabilitation School. These assessments will take place at four time points: baseline, immediately after the first session, after the final session, and two weeks post-treatment. Participants/Inclusion and exclusion criteria: Individuals aged 18 to 40 years - Patients with active trigger points in the hamstring muscle, diagnosis of active trigger points will be performed according to the Travell & Simons criteria Exclusions: - Having a history of orthopedic or neurological problems in the lower extremities - Having back pain at the time of the study Intervention groups: The group receiving static stretch and dry needling and the group receiving static stretch and cupping therapy Main outcome variables: Pain intensity - range of motion - hamstring muscle flexibility with active knee extension test - passive stretch tolerance of hamstring muscles - peak passive torque of hamstring muscles against stretch