Strengthen ” don't strain ” your shoulders. This simple move helps to resolve the postural issues that result from most kinds of training (and sitting!) by putting your shoulder blades back into optimal alignment and strengthening your upper back to keep them there. Great prep for plank or any weight bearing exercise.
Oiselle Suspension Shimmel: http://www.oiselle.com/shop/running-tops/suspension-shimmel-with-removable-cups
Oiselle Charcoal Go Joggings: http://www.oiselle.com/shop/running-bottoms/running-pants-capris/charcoal-joggings