Posted by Ted (Bangkok, Thailand)
While ginger seems to restore energy in most cases, however I find capsicum powder (cayenne peppers) mixed with fresh ginger works the best as it helps with circulation. Especially works well if you are drowsy and raises oxygen level to those tiny capillaries which receives little or no blood flow.
If you can find them, fresh ginger and fresh cayenne peppers (finely chopped) work the best due to higher bioflavonoids, vitamin P content, as well as vitamin C, etc.
You would not believe that the amount of vitamins in FRESH vegetables are MUCH MORE THAN THOSE THEY GIVE YOU IN VITAMIN SUPPLEMENTS!!! Cooking destroys nearly everything the vegetables have to offer and end up paying more buying vitamin supplements, and much much more going to see doctors.