How you breathe during strength training directly affects muscle engagement, core stability and power output. Dana Santas explains in the last of this five-part series.

When running, it is important to breathe using your diaphragm and to create a rhythm between your breath and strides.

No, this doesn’t mean your abs are inherently weak. But it might be a sign that your workout needs some fine-tuning. The abdominals are stabilizing muscles made up of four main muscle groups—the ...