[QUOTE=max219]I've seen you mention in posts before, but what is your opinion on resting heart rates? Is higher better? As an endurance runner I've always though the lower the better, especially for endurance racing. When in good racing shape mine is about 52-55 a minute, and some professional runners have below 40 (Meb Keflezighi for example.)[/QUOTE]
Ideally heart rate should be between 75-85 bpm at rest.
"...exercise accelerates the breakdown of thyroid hormones, resulting in
a protective slowing of metabolism. 'The slow heart beat of runners
is largely the result of this adaptive hypothyroidism.'"
This explains athletes lower pulse.
(Your inbox is full)