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.
1 If hanging pants in a closet, step one is to fold the pants in half. To do this, place the pants on a flat and clean surface. Place the pants zipper down. Fold the pants over so the legs are together. Pull from the cuff, making sure they are aligned.  With your hands on the cuff, pull the pants off the flat surface.