ENDURANCE 8 bottles 1,922 yen NI 8 bottles 1,641 yen In endurance sports, it is said that (1) the use of fat as an energy source is prioritized, (2) preventing the waste of glycogen, and (3) ensuring that there is no shortage of hemoglobin, which carries oxygen to every part of the body, are important. The ingredients in this product, such as L-carnitine, L-histidine, and iron, support those endurance systems. The three amino acids L-leucine, L-valine, and L-isoleucine are also called BCAA, and various roles of them as nutrients have become clear. Among them, the recovery effect is attracting attention. NI (Knee) supports that.