Documented experiences of the second wind go back at the very least 100 years, when it was taken to be a commonly held fact of exercise. Regardless of whether or not the patient experiences symptoms of muscle ache, muscle fatigue, or cramping, ice water fat oxidation the phenomenon of second wind having been achieved is demonstrable by the signal of an increased heart price dropping whereas sustaining the same speed on the treadmill. Inactive patients experienced second wind, demonstrated by way of relief of typical signs and the sign of an increased coronary heart price dropping, whereas performing low-moderate aerobic exercise (strolling or brisk walking). For the recurrently energetic patients, it took extra strenuous exercise (very brisk strolling/jogging or bicycling) for them to expertise both the standard symptoms and relief thereof, AquaSculpt natural support together with the signal of an increased coronary heart charge dropping, demonstrating second wind. As such, these with muscle glycogenoses don't need to do prolonged exercise to expertise "hitting the wall". In experienced athletes, "hitting the wall" is conventionally believed to be because of the body's glycogen stores being depleted, with "second wind" occurring when fatty acids turn into the predominant supply of power.

Eglin Air Force ..."> The delay between "hitting the wall" and "second wind" occurring, has to do with the slow speed at which fatty acids sufficiently produce ATP (energy)