I have the same issues as many of the people here stated. If it is not an animal i am interested in taking i couldn't give 2 hoots. I doubt my pulse increases one beat/minute. However a deer or an elk i am going to take has my heart pounding so hard i am sure the animal can hear it. I am no newby and have taken lots of game and been close to many big deeryet i still get this every time, great feeling but sometimes its hard to shoot.