Vigorous exercise pushes your breathing to the point where it’s only possible to mutter a few words at a time, he says
To differentiate between moderate and vigorous activity, it’s important to pay attention to breath, says Joseph Petreycik, an exercise physiologist and nurse at Bridgeport Hospital in Connecticut. During moderate exercise, it should feel like you’re working but can breathe well enough to speak freely. Vigorous exercise pushes your breathing to the point where it’s only possible to mutter a few words at a time, he says