Feeling less than energetic in the bedroom (or anywhere else, for that matter) is no fun. As we age, low sex drive can affect men and women for a number of reasons. In fact, one study found that 31 percent of men and 43 percent of women suffer from some form of sexual inadequacy at some point in their lives. Menopause, certain medications, erectile dysfunction, excessive fatigue, body image issues, stress, and lack of sleep are just a few libido killers. Fortunately, there are some simple strategies to keep you and your partner in the mood. Read on to learn more about libido plus effective ways to improve yours.