Clinical Research Directory

Inclusion Criteria: * Gender: Male * Age: 25-55 years * Healthy status * Active endurance runner * Regular physical activity (at least 3 times per week) * Availability on specific days and times for research sessions * Willingness and consistency Exclusion Criteria: * Allergies or Intolerances: Participants with known allergies or intolerances to chocolate or any of its ingredients. * Cardiovascular Diseases: Participants with known cardiovascular diseases or history of cardiac episodes. * Metabolic Disorders: Individuals with diabetes or other metabolic disorders that may affect glucose and insulin metabolism. * Contradictory Diet: Individuals following specific diets that may affect the study, such as high or low flavonoid diets. * Medication Use: Individuals taking medications that affect vascular function, such as antihypertensives or anticoagulants. * Smoking: Smokers or individuals who have quit smoking within the last six months. * Substance Abuse: Individuals with a history of alcohol or substance abuse. * Patients with Chronic Diseases: Individuals with serious chronic diseases that may affect the study outcomes. * Participation in Other Studies: Individuals participating in other clinical trials or research that may affect the study outcomes. * Physical Condition: Individuals who are not regular runners or who do not exercise regularly at a level similar to other participants.