I use PROAIR HFA as my rescue inhaler and for some reason needed it in the past 2 days, Today was very comfortable in New Jersey but I wasnt breathing quite right, anyhow my question? Is there anything that doesn't race your heart, it relieve's breathing problems but causes uncomfortable heart palpitations, the website I was reading says your body adjusts to this after awhile , we'll I've used it numerous time's and I really haven't "Adjusted" to this.