Best iPhone bicycle mounts: Bracket and bike it. We took three of the top bicycle iPhone holders for a test pedal to see which one kept our little touch-screen buddy safe and sound. Phones make trusty , MP3 players, and cycling computers--as well as handy phones--so they can replace a pocket full of gear on your daily commute or monthly trek.
A normal pulse rate at rest is between 60 and 100 beats per minute. Generally, a lower pulse rate means that your heart muscle is not having to beat too hard to do its job. However, if your pulse goes too low, it can be dangerous.
Causes of Heart Rate Changes. The heart rate is affected by different factors. According to MayoClinic.com, a normal heart rate is between 60 and 100 beats per minute. It is not uncommon for an athlete to have a resting heart rate between 40 to 60 beats per minute. A low resting heart rate may be indicative of a healthy cardiovascular system or it may signal the advent of heart disease. When the heart rate is over 100, it can be indicative of strenuous activity or illness.