This study aims to evaluate the efficacy of seated exercise on functional capacity and quality of life in patients with leukemia during chemotherapy cycles Participants will receive efficacy of seated exercise on functional capacity and quality of life in patients with leukemia during chemotherapy cycles over a defined period. Outcomes will be assessed using Pulmonary function test, 6 min walk test and FACT- G questionnaire to determine improvements in quality of life in cancer patient rehabilitation special to diagnosed with leukemia.