Chard, beet greens, spinach, and Chinese cabbage (such as napa cabbage, bok choy, and tatsoi) may not have the perfect 100/100 nutrient density score of watercress, but they all come close at 86 ...
Calories and kcal are used interchangeably and refer to the same amount of energy, but kilojoules require conversion. Usage may differ depending on where you live. Calories are a measure of energy ...