Hello, I am a 56 year old male.
I don’t know if I have a heart problem or something. I have noticed over the past couple of weeks that when I go out for a walk of around 2 miles that after about half a mile I feel a large amount of fatigue/weakness in my legs and somewhat in my arms and really struggle to continue as I feel exhausted. My pulse usually is quite faint all the time and my heartbeat is not fast during this time. Prior to this I was doing 2 miles without any issues. Also, sometimes when I lie down I feel a constant vibration in my left rib cage.
On another note I have held my breath for as long as I can and when I exhale my heartbeat is not fast as I would expect. Hopefully I can find some answers from some of you.