01
About this exercise
Breath support means maintaining consistent subglottal pressure throughout a phrase — not just having a lot of air, but managing its release. The hissing exercise isolates this skill by removing pitch and tone from the equation entirely.
As you develop this, you'll notice phrases becoming easier to sustain, high notes requiring less effort, and your tone becoming more even across the whole phrase rather than fading toward the end.
02
How to do it
- Inhale deeply using diaphragmatic breathing.
- Exhale on a sustained "sss" sound — aim for complete steadiness, no wavering.
- Count silently. Log how many seconds you can sustain before running out of control.
- Rest for 30 seconds. Repeat 4 times per session.
- Set a weekly target: add 2–3 seconds each week.
- Progress benchmark: 25 seconds = solid, 40 seconds = strong, 60+ seconds = advanced.
03
Vocal coach tips
- The sound should be completely even — like a machine, not a wave.
- Engage your lower abdominal muscles lightly inward as the air depletes.
- Don't push — the feeling should be one of holding back, not forcing out.
04
Common mistakes
- Letting the sound fade and waver at the end — keep the pressure up.
- Squeezing the throat to extend the breath — this defeats the purpose.
- Starting with too much air pressure, which causes the breath to run out quickly.
05
Variations
- Vary the consonant: "fff", "vvv", "zzz" each create slightly different resistance.
- Rhythmic pulses: sustain on "sss" then pulse 4 times with the diaphragm — "sss ss ss ss ss".