Unsaturated Fatty Acids Enriched-diet to Improve Cardiorespiratory Fitness, Metabolic Flexibility and Glucose Tolerance in Obese Patients

Investigators will provide participant with detailed information about the consumption of food rich in unsaturated fatty acids (UFA) like extra-virgin olive oil, canola oil or mixed nuts, and they will provide specific recommendations based on the participant's diet. The investigators will follow up with a weekly phone call to assure that the dietary recommendations are clear and that the participants can integrate the suggestions into their daily diets.