Pre-workout supplements make big promises to boost your performance, and with those promises come high price tags. You supposedly get a burst of energy, fatigue less easily, and increase blood flow, all to help you get more out of your workout. The thing is, these supplements are really just powerful stimulants.
The iconic cartoon character Popeye became most famous for his slapstick routine of eating a can of spinach, then attaining superpowers that he often used to give his gigantic nemesis Bluto a severe pummeling.
But Bluto might be lucky that Popeye never got his hands on a glass of beet juice.
100 grams of arugula is roughly equivalent to 500 grams of beets. To varying degrees, many other leafy greens work too. You can also get the same effect by supplementing citrulline. But for those of us on warfarin/coumadin – stick to beets for vitamin k content.