997cc047_ng_Zones___Guide___Wattbike_UK__Physiological_Adaptations
[Training Zone] Recovery [Purpose] Regeneration and recovery [Race fitness] Promotes recovery and therefore training response [Physiological Adaptations] 
Increase blood flow to muscles to flush out waste products and provide nutrients
Heart Rate and Power Training Zones - Guide - Wattbike UK
Physiological Adaptations