Certain foods contain sex hormones and have the power to manipulate hormone concentrations in your body , influencing sex drive virility and physical performance. Vitamin C perks you up , giving both men & women the required agility. Chocalate contains powerful stimulants that lead to a sudden surge of energy , soon after it's eaten. It also contains large quantities of a chemical called " Phenylethylamine " that produces a feeling of happiness.On Valentine's Day make sure you stick to the low fat foods.