Blueberries.

http://www.nutrition-and-you.com/blueberries.html

Blueberries are among the highest anti-oxidant value fruits. The ORAC value of 100 g fresh blueberry is 5562 TE (Trolex equivalents). Their antioxidant value largely derived from poly-phenolic anthocyanidin compounds such as chlorogenic acid, tannins, myricetin, quercetin and kaempferol.

http://www.livestrong.com/article/251686-nutrition-information-on-blueberries/

http://www.blueberrycouncil.org/health-benefits-of-blueberries/blueberry-nutrition/

http://www.ehow.com/about_5101275_nutritional-information-blueberries.html

Seven natural endurance boosters.

Nitrates
Quercetin
Resveratol
Caffeine
Raw Honey
Asian Ginseng
Spirulina

Resveratrol

What is it? A quercetin cousin, resveratrol is found in grape skins and red wine, and becomes more concentrated as grapes ferment during the wine-making process. Another potent antioxidant, researchers have linked resveratrol to improvements in longevity, fat-burning, and athletic endurance.

http://fitbie.msn.com/get-fitter/tips/7-natural-endurance-boosters/tip/0?gt1=50014