hyperventilation

"If you’re doing the combination of hyperventilation and breath holds, you’re shifting these blood gas levels up and down to the point that those shifts alone can have effects."

It can take up to 24 hours for victims to start showing signs of illness which include: nausea, vomiting and abdominal pain which can escalate into hyperventilation and breathing problems.

Slower practices calmed his mind and body while faster ones like holotropic breathing put his body into a state of hyperventilation and gave him profound psychedelic experiences.

Boy met girl, football fans met Swifties and each new development became a cause for hyperventilation.

These brief losses of consciousness, whether brought by pain, fear, heat, hyperventilation or other causes, account for a significant portion of hospital emergency room visits.