This will vary from class to class. Certain exercises in the palates spectrum can help with libido and others don't. As a general rule however, a healthy level of exercise is good for libido.
Do not confuse sexual desire with an ability to become aroused -- it's the latter that the barbaric tradition of female circumcision is intended to eliminate and once done it's done. However this is...
Grapes have a good deal of dietary fiber which is good for digestion. They also have antioxidents which are good for overall health. They don't effect eyesight.