Chapter Two, The Breath, discusses breathing, breath support, relaxation, air compression, blowing exercises, the diaphragm, the lungs, inhaling and exhaling air, circular breathing, the relaxed throat, the glottis, warm-up exercises and excessive tension.
Really low sagging, like practically with your pants at your kneecaps is not in style right now, but sagging to show a little underwear, or the more PC term low rise is still in. Sagging is purely a thug influenced thing, dudes do this look like wannabe thugs that lost their belts in prison. I won't even lie.
wearing ones pants around the hips so that they sag down and bunch up around the ankles. Originally, this was a prison thing that signified that you were another prisoner's property, ie bitch. Punks were forced to wear their pants this way so it would be easier for their masters to pull their pants down and butt-fuck them. Somehow this became a 1990's fashion trend. I learned this from watching a TV special on prison life.