Muscle Cell Type
People have two types of muscle cells: Type I, and Type II. People have different proportions of each, according to their genetic type. The Type I muscle-cell has a good blood supply and plenty of LPL. This is good, because muscles cannot store fat — they can only use it for energy. Thus, individuals with more Type I cell usually demonstrate more endurance during athletics. Unfortunately, you cannot change your muscle cell types. Regular exercise will increase circulation to every muscle cell, thus making Type II cells more like Type I’s.