The ayurvedic remedy Ashwagandha is reported to aid fatigue and anxiety, and boost immunity. Take one to two grams of the room per day in capsules or tea; in tincture or liquid, take 2 to 4 milliliters three times a day. Ashwagandha is often referred to as Indian ginseng because its effects are similar to those of the Chinese herb, and it is used as an overall energy booster in ayurvedic medicine much the way ginseng is used in Traditional Chinese Medicine. A study in Phytotherapy Research also suggests that it may be particularly adept at diffusing anxiety. Ashwagandha reportedly improves stamina and reduces damage caused by various stressors. It stimulates the immune system, and its antioxidant properties may protect the heart and help prevent cancer. Sounds like a great supplement for us endurance athletes, huh?