Redox biology is probably the most rapidly expanding field in biology. Indeed, the number of conferences, journals, and books devoted to redox biology is increasing and it is very often seen that major biology journals publish special issues on this area (e.g., [1–5]). This fact is probably due to the disclosure of the diverse roles reactive species have been found to serve, such as the control of the signaling of intracellular pathways [6], the mediation of enzyme activation [7], and the participation in antibiotic synthesis [8]. The significance of reactive species has been further underlined by the emerging links between cellular redox events and the etiology of many human diseases [9]. As a result of this progress in basic redox biology, the subfield of exercise redox biology has also markedly advanced.