Though the exact cause of PCS remains unclear, experts believe it's triggered by irritation or pinching of the nerves in the inner lining of the chest cavity, known as the pleura. Unlike ...

"Pinched nerves can happen anywhere in the body but ... Exhale, round your spine upward (cat position), tucking your chin to your chest and pulling your belly button toward your spine.

He put the strange feeling down to "race day nerves" as it was his first Hyrox ... Ashley began experiencing sharp pains across his chest, arms and back, prompting him to be checked over by ...