Inclusion Criteria:  Aged 50 years or older. Recent diagnosis of coronary heart disease or a cardiac event related to coronary heart disease. Have been offered standard cardiac rehabilitation in a Newcastle upon Tyne Hospitals NHS Foundation Trust. Usually receive dietary education as part of their cardiac rehabilitation program. Able to understand and undertake the tasks described as part of this study. Able to provide written informed consent.  Exclusion Criteria:  Patients advised against participation in light exercise by a medical professional. Patients younger than 50 years. Patients unable to alter their diet due to medical reasons; including patients that have been prescribed artificial feeding, texture modified diets, and specialist renal diets. Patients with known stage 4 or 5 chronic kidney disease. Patients without access to teleconferencing technology or without another adult present (≥18 years; and with capacity to supervise the activity) will be excluded from participating in the remote sit-to-stand test for their safety.