Question

what is breathing rate during climbing stairs​

Answer 1

$\red\bigstar{\huge{\boxed{\mathcal{\orange{Answer}}}}}$

Anything under 94 beats per minute is fine. The average rate for 26-55-year-olds ranges between 79 and 110 beats per minute. Anything higher is poor. Excellent scores are under 76 for under-45s and under 80 for those older.

Your body suddenly needs more oxygen -- hence the feeling of being winded. Another reason why it affects you so strongly is because walking up stairs uses your fast-twitch muscles, which are used for explosive movements, and muscles like your glutes that you may not commonly train.