While training for that fall 10K you signed up for, let's say you notice you’re breathing a little too heavily during runs — making you wonder if the way you inhale and exhale is impacting your training goals.

“Connecting to our breath when moving the body is extremely important,” Stephanie Mansour, TODAY contributor and personal trainer for the Start TODAY app , previously told TODAY.com. “Depending on your goals, it can be used to help release tension and de-stress, power through a tough exercise or last longer during a cardio activity.”

Training Tip of the Day: Overly Tired Muscles Are a Sign of Poor Breathing

For people who enjoy cardio and weight training, there’s a telltale way to know if you’re breathing incorrectly — your muscles feel overworked.

“A lack of oxygen will result

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