Neal on Instagram: "It wasn’t fueling and there weren’t any hacks or easy fixes. For me it was (and is an overwhelming majority of the time) a muscular deficiency in the athlete. 1. Plyo and heavy loaded calf raises (seated especially for Soleus isolation) prepares the calves for the immense load of a marathon. The calves take a majority of the pressure and provide the most running economy gains of any muscle. Running alone can’t replicate jump work and heavy weight loading. 2. Speed work. Engag