Inclusion Criteria:  18 years, One or more lower work cramp attacks during/after dialysis Have a constant dryness in the last 1 month (few changes weighing more than 2 kg) Receiving at least 6 hemodialysis treatments Receiving hemodialysis treatment 3 times a week Those who have not received sub-massage therapy before  Exclusion Criteria:  Having one of the diagnoses of chronic obstructive pulmonary disease, cancer, psychiatric disease Presence of any soft tissue, nerve and vascular disease in the lower extremities Presence of infection, open wound, suspected fracture, dermatitis, burn and edema in the lower extremities Having had a lower extremity operation in the past six weeks Receiving hemodialysis treatment for less than 6 months (new patients are excluded because the first few months of dialysis treatment are periods of hemodynamic instability) Having a fluctuating dry weight (excluded from the study as it may cause cramping) Having been diagnosed with neuropathy in the lower extremities