Now for a little practical experiment – one that you, dear reader, are able to take part in without any undue effort. Exhale slowly and steadily into the palm of your hand. Make a mental note of how it feels. Now purse your lips, and blow vigorously onto your palm. You may use the other hand if you wish.
You will observe that when breathing slowly, the air feels warm, but while blowing firmly, the air feels cool.
Your breath has not changed temperature. Neither has your hand. So why is there a difference?
Good luck everyone, and just remember, simple is sometimes the answer.