Most people are aware that a healthy lifestyle is the key to a good sex life. However, small, simple changes can also affect libido and testosterone levels. For example, cutting out fast food can have a drastic effect on sexual health. According to Medical Daily, “Indulging in greasy foods like burgers and fries is a no-no when it comes to healthy eating and sex. The trans-fat found in fried foods is known to dramatically decrease the male libido. The adverse effects of consuming these trans-fatty acids [also] include an increase in the amount of abnormal sperm production for men," says Dr. Douglas Heise, a chiropractic physician. Who knew that after-work burger and fries had such an effect on your sex life?