Strength Endurance Secrets: Build an Unstoppable 2nd Wind

I was an eye-rolling sceptic.  After 10 years of military training, weight-lifting and martial arts, I thought I could spot what was result-generating vs mystical mumbo jumbo that does not work.  I mean c’mon.  I had been a paratrooper, marathon runner, mountain climber, kick-boxer as well as crossing some rough terrain like inside of the …