"Breathe willingly"=" breathe less"
Should be said. There are five ways of breathing less.
Starvation (not healthy)
Training for hypoxia (live in Colorado, extensively exercise in Kjetil Larsen/David Gahan form, or use a special chamber)
Postural correction (the Kjetil Larsen/East Asian EDAR mutation woman way)
Caffeine
Fat reduction surgery