As a counterpoint, a friend in his 70s was advised to exercise (hasn't since high school in the 70s) and we now go together to a local gym. I am five years younger, but my heart beat has measured by the exercise bike (when we start) is 80 beats per minute. His when we started was 120 beats per minute.
He had been taking one livon lypo-C per day, but I advised him to try Cardio-C. He had trouble with 2 scoops daily (diarrhea) but was able to do one scoop regularly.
Now about a month later, my starting HB is still 80 beats/m, but his has dropped to 100 beats/minute.
Owen R. Fonorow, Orthopath® (Orthomolecular Naturopath)
® is a trademark of the Institute for Orthomolecular Studies