Hot peppers (of which cayenne is one variety) have great health benefits if consumed regularly. Perhaps the greatest attribute of hot peppers is that they boost the effectiveness of other herbs/supplements that are taken with them. They are excellent for the heart and for improving blood circulation. In fact, there are several doctors that say hot peppers of 250,000 HU (Heat Units) or more can stop a heartattack or a stroke, sometimes with no permanent damage. Apparently, hot peppers can even stop severe bleeding if the powder or a tincture is poured directly into the wound. There are many stories on the web from people that have found this to be true. Peppers are easy to grow, and the really hot peppers aren't cheap ($20.00 or more a pound for powder), so why not grow your own? You can even buy a few habanero peppers at your local supermarket (make sure they are hot) , take out the seeds (get instructions on the web) and grow some plants.
Gotu Kola can improve blood circulation too, but it has many other uses. It can improve memory and concentration, aid with depression, and it is supposedly a miracle worker for people with arthritis. Many people have had pain relief from arthritis for the first time using only Gotu Kola. Gotu Kola is easy to grow too. It's a tropical plant that grows well indoors or outdoors (in warmer climates) . Usually two or three leaves a day is enough to get the benefits from this herb. In some cultures they just add the leaves to a salad. You might find a local nursery that sells the plants, and I know there are a few sources on the web for plants and seeds.
These are two herbs that are well worth learning more about.