Whey Protein  concentrate  is  derived  from  dairy  and  is  a  by  product of cheese  making. This  is  an  ideal  protein  as  it  has  very  little  fat, cholesterol   &  carbs.  It  helps to build muscle size, defination aid recovery,  improve  insulin  sensitivity  &  has  immune   boosting  effects .  Additionally,  whey  isolate   is shown to  boost  production  of  glutathione, the  body's  master  antioxidant.