Brad talks about maybe the most important element of a successful endurance program--emphasizing aerobic base building at the proper heart rates. This fast paced narration will give you the straight scoop about how to train aerobically, and help you avoid the egregious mistakes that endurance athletes of all ability levels make when they drift into slightly too difficult intensity zone during workouts - training in the Black Hole! Brad dispenses Dr. Phil Maffetone's secret formula of "180-age" heart rate training, and details the burnout he experienced early in 2015 by mistakenly training at too elevated of an aerobic heart rate. Get your training straight by listening to this quick, informative podcast!