Using the Infrex FRM or Infrex Plus machines it's important, in order to understand how we enhance recovery and/or improve athletic performance, to understand what are valence electrodes. It is these electrodes we affect to accelerate recovery from injury and also to possibly enhance total overall health by reducing the free radicals found in our body. It is also the increased quantity of free radicals produced by exercising that we want to minimize to protect overall long term health. The process of exercising produces more free radicals. It's that production and the destruction free radicals cause that possibly leads to the danger of the "weekend warrior" injuries and health deteoriation.
This video, by Tyler DeWitt, is a very good example of what is a valence electrode and how it fits in the periodic table.