By Dr. Sanchari Sinha Dutta, Ph.D. New study reveals that pairing caffeine with beetroot juice gives non-athletes a measurable edge in high-intensity running—while spotlighting the lifestyle and ...

The 100 percent juice comes in 12-ounce resealable bottles in Orange and Mixed Berry flavors. It contains 190 calories per serving, and caffeine that’s equivalent to 12 ounces of coffee.