Whose theory is that? My source of information (book "Ernaehrung und Training" by Dr. W. Feil and Dr. T. Wessinghage [european champion over 5000m in 1982]) cle

Whose theory is that? My source of information (book "Ernaehrung und Training" by Dr. W. Feil and Dr. T. Wessinghage [european champion over 5000m in 1982]) clearly states, that "stretching [immediately after sport] is the gate of regeneration".