100% MR and Muscle Synthesis Improve Marathon Times!
At the age of 45, I just set a PR at the Boston Marathon of 3:10 I have been working with Scott Mendelson and using Infinity Fitness products for several years. As a competitive distance
X Raise Cluster 8 Negative
target the upper back and posterior shoulder with the X Raise using cluster 8 negative execution.
Supinated Lat Push Down
Target the lower portion of the lats with the palms facing the ceiling during the Supinated Lat Push Down. Keep the shoulder blades down during the entire movement. Notice the attention to the exercise tempo