Questions with the keyword 'respiration'

• WHY DO WE POOH AND WE AND BREATH AND BLEEDED by aussiechloe1112 to Stuart, Simone, Serena, Josh, Alexander Comments: (No comments so far )
• Is circular breathing possible? if so, how does it work? by 07stoombs to Alexander, Josh, Serena, Simone, Stuart Comments: (No comments so far )