Ginseng... energy...
There's several types of ginseng... some say each type is supposed to be more yin or more yang being more open to females or males energy in taking it and what not. I've taken ginseng complexes (combo of 2 or more types) with good results. Some also combine gingko with ginseng... gingko is supposed to increase the circulation in the brain (and throughout one could assume) and some claim aids in concentration and sharper thought processes.
Cinnamon... what Tarty said, as well as I've personally found that it seems to be a scent most men find very alluring. Seems a female who'd like to intice a man would do well to bake some cinnamon rolls or use incense/candles of the scent for ....amore.... shall we say.... I know my hubby loves cinnamon, so we have plenty on hand.. ahem, an even easier way of infusing throughout a house/flat is to simmer cinnamon sticks on the stove in a bit of water. Don't boil, just slow simmer and add water to prevent scorch... for a more festive scent, which can be lovely in winter and very comfy, add cloves, allspice, orange and apple peels... I'm rambling... cinnamon can be found in ground, stick and oil form... I personally find cinnamon to be very comforting and sprinkle it in most sweets I make that may not already call for it, including french toast, pancakes, breads and even applesauce... mmmmmmm...
There's tons of others... need/want any specific information?