### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hello Dr. Grief. My name is Alexander and I am a 20 year old male. I am about 62 183 lbs and I consider myself to be pretty healthy. I have been donating blood plasma for several months now and, for the most part, I have not run into any problems during the check-ins. However, from time to time my pulse will be too high and I wont be allowed to donate. A couple weeks ago I went in and my pulse was 114, and the last time I went in (a few days ago) it was right at 100. I do smoke cigarettes at least every other day although I rarely smoke more than 2 or 3 cigs/day. I also drink coffee several times a week, but I make sure to never smoke nor drink coffee the morning before I go in to donate. I really need the $ to pay for gas so it is critical that my pulse is below 100 when I go in tomorrow. Aside from basic breathing exercises before and while my pulse is being taken, are there any other methods that are available to me to help ensure that my pulse wont be too high when I go in?

### output:

First you must understand that naturally our pulse rate varies between 60 and 100.smoking and coffee both can increase pulse rate. So from today onwards stop this habit. Whenever one goes for blood donation there is natural element of anxiety which may push up this rate to some extent. So avoid smoking and try to reduce anxiety by mouth dissolving tab.clonazepam 0.5 mg prior to blood donation. If this solves your problem you can safely ignore. But inspire of this still u continue to have high pulse rate check for thyroid functions. My best wishes.