Non-Pharmacological Interventions for Neurotoxicity in Hematologic Patients Receiving CAR-T Therapy

The goal of this clinical trial is to learn if two non-pharmacological strategies can help reduce neurotoxicity caused by CAR-T cell therapy in adult patients with hematologic cancer, both sexes, aged 18 to 80 years. The strategies are: * A structured physical activity program. * A combination of physical activity and nutritional recommendations. The main questions it aims to answer are: * Does physical activity help lower the risk or severity of neurotoxicity after CAR-T therapy? * Does combining physical activity with nutritional recommendations provide greater protection against neurotoxicity than physical activity alone? Researchers will compare two intervention groups with a control group (no intervention) to see which approach is most effective in reducing neurotoxicity and improving recovery. Participants will be randomly assigned to one of three groups using stratified randomization to ensure balanced clinical and demographic characteristics: * Group A: Structured physical activity program. * Group B: Structured physical activity program combined wuth nutritional recommendations. * Group C: No intervention; used to establish baseline patterns. Participants will be evaluated periodically by study professionals. Comprehensive records of symptoms, health measurements, and relevant lifestyle data will be maintained throughout the study.