Well..
Let's see.
At extreme levels of exercise it is definitely possible to sustain a heart rate of greater than 200 beats per minute for periods of time. Recently I heard of friends cycling for a study at 200 pulse for 15 minutes, three times per day for three days. Knackering, but possible!
A pulse of below 60 is good and below 50 is very fit. I hear that Steve Redgrave has a resting pulse rate in the 20s..no joke.
Is being super fit good for you? Well, apart from all the muscle to show the ladies, it depends on your diet. If you eat a balanced, nutritional diet and exercise regularly then you are at less risk of developing some diseases : Coronary Heart Disease being one of them, but many diseases involve a genetic component so you can't protect against them (cancer being a big one)
Good Luck... I wish I could get a pulse rate of 37!
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