The best replacement for breathing is respiration.

The best alternatives to breathing are rated as following:
★★★★★  respiration
★★  mouth breathing
★★  nose breathing
★  cpr
★  ventilation
★  cellular respiration
★  chest breathing
★  breathing
★  stomach breathing
★  external respiration
★  loving you
  abdominal breathing
  quiet breathing
  incentive spirometry
  pulmonary ventilation
  heart rate
  shortness of breath
  fascicular breathing
  deep breathing
  cheyne stokes
  coughing
  speech breathing
  swallowing
  mechanical ventilation
  water breathing
  mouth
  negative pressure breathing

Your alternative for breathing is not listed? Suggest!
Speaking about breathing, one probably shouldn't forget about pulse.

Other search terms related to breathing and their ratings are:
★★★★★ pulse
★★★★ diaphragm
★★★ oxygen
★★ breathing
★★ no pulse
★ heartbeat
★ chest pain
★ accessory muscles
back pain
You have in mind a companion for breathing and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of breathing in all years. Click on graph for more.
breathing
respiration
mouth breathing