Anxiety
"I am a hypochondriac, I fear that I am dying of something all the time. I got on atenolol for my anxiety, I take it sometimes twice daily. I find that it lowers my heart rate which calms me down since I am not worrying what I could possibly have. I like it a lot. It is a nice small pill that I take and I have had a heart rate in the 50s from it... But it usually is more subtle and does not move the number of beats per minute that much. It makes me not worry about my pulse."