I workout via swimming or stationary bike for about 1/2 hour 3 times a week, and have been doing so for several years now without incident.
I recently started taking Ateno

for tachycardia and BP regulation.
I worked out pretty hard yesterday while on the Ateno

, max HR around 135 or so.
Afterwards and for several hours my chest felt pretty tight almost like my heart was "sore" or something, I noticed it especially if I took a deep breath. I didn't like that feeling. Is that normal?
thanks