1. Male volunteers 2. With age ≥20 and ≤50 y 3. BMI between 18.8 Kg / mt2 and 24.9 Kg / mt2, 4. Consumers of cape gooseberries and citrus fruits 5. Non-smokers 6. Non- high performance athlete (subjects with a sedentary physical activity, mild or moderate, without exceeding 10 hours per week of training). 7. No history and/or diagnosis of chronic diseases (cardiovascular, hypertension, congestive heart failure, stroke, arrhythmias, dyslipidemia, diabetes mellitus, cancer, chronic renal failure, liver disorders, hypothyroidism, insomnia, duodenal ulcer, gastritis, disorders of malignancy absorption, Alzheimer's, Parkinson's or any other neurodegenerative disease that prevents an adequate collection of information, cancer, Crohn's disease, ulcerative colitis, short bowel syndrome or celiac disease, dysautonomies, sleep disorders and psychiatric disorders) 8. Not currently consuming medication (lipid-lowering drugs, antioxidant supplements, natural products, supplements or dietary supplements, multivitamins, antiepileptics, steroidal anti-inflammatories, hypnotic drugs) 9. Without antibiotic or antiparasitic use in the last three months. 10. Volunteers should have a work schedule between 7.00 a.m. and 6.00 p.m. from Monday to Friday and not having to leave the workplace during the time the study lasts.