A brick session is training in which two components of an event within the triathlon are conducted consecutively with little rest. For instance, a cyclist will bike 40 kilometers and then, with no rest, immediately go for 10 kilometers of running.
The term “brick” could be derived from the fatigue athletes experience when transitioning from cycling to running. Triathletes find these types of workouts useful as they acclimate the body as well as mind for swapping between activities in the middle of an event, particular in the Olympic, Half Ironman (70.3), and Full Ironman (140.6) distances. Brick training allows the body to adapt to transitioning activities, which can assist athletes in maintaining form as well as speed in the difficult ending stages of an event.
