Heart clocks regulate the daily variation in heart rate - Each heart cell has a clock that regulates the frequency of firing rate between day and night. This helps the heart to beat faster during ...

This secret to improving your cardiovascular health and endurance: zone 2 heart rate training. Zone 2 cardio rate training means working in one of five heart rate zones at 60-70% of your max heart ...

The best heart rate monitor on the market is the logical next step in your training armory if you want to take to your health and fitness to the next level. While the best fitness trackers and ...