rebreathe
/rɪˈbriːθ/Definitions
1. verb
to breathe in again, especially the air one has just exhaled, often as a result of exhaustion or stress.
“The runner had to rebreathe after crossing the finish line to catch her breath.”
2. noun
the act or process of breathing in again, especially the air one has just exhaled.
“The doctor monitored the patient’s rebreathe after the surgery.”