Variation in the Impact of Coffee on the Metabolic Rate

Inclusion Criteria: Healthy adults 18-40 years old Exclusion Criteria: Those who have undergone surgery in the past 6 months. People are requiring long-term medication. People have metabolic diseases, like diabetes, hypoglycemia, gout, osteoporosis, etc. People have digestive diseases, like gastric ulcer, pancreatitis, intestinal obstruction, etc. Those who have recently lost weight for various medical reasons ( like cancer, etc.). People are suffering from infectious diseases ( like HIV, etc.). People have blood phobia, pathological hypo or hyper tension. People with impaired glucose tolerance. Those who are afflicted with claustrophobia.