vCard â the electronic business card standard. vCard (also VCF) is a standardized method of storing and transferring contact data. vCard is superior to CSV in that it can store textual and numeric data, but also contact photos, and audio clips (i.e. assigned ringtones).
A normal resting heart rate for adults ranges from 60 to 100 beats a minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats a minute.
The target heart rate for a healthy heart is anywhere from 50% to 85% of your calculated maximum heart rate. For example, if you are 40 years of age, your maximum heart rate should be at around 180 beats per minute, and your target heart rate between 90 and 153 beats per minute. It is good for your heart to be exercised. Like any other muscle in your body, exercise will make it stronger.