Runners, cyclists and gym-goers with wearable fitness trackers are no doubt familiar with the five "heart rate" zones.

Here's why you should be using Apple's Heart Rate Zones.

For years, the gold standard for gauging workout intensity was often a simple "how you feel" metric. And while perceived exertion is still used by many exercisers and athletes today, it’s a bit like ...

The basic appeal of heart rate-based training is that it offers a scientific approach to optimize your workouts. Whether you’re putting in miles before a marathon, prepping for a big game, or simply ...

Cardiorespiratory fitness exercise, often called aerobic or “cardio” training, is important for heart health, weight control, and overall fitness. This training can be broken down into five categories ...

The debate about how hard to push during exercise has persisted for decades, with fitness approaches swinging between high-intensity interval training and gentler, steady-state activities. However, ...

“Run slow to run fast” goes the Zone 2 rallying cry that has taken the fitness internet by storm. Over the last three years, this once-obscure sports-science concept has become gospel for many ...

Moderate intensity exercise encompasses activities that are somewhat challenging for you to perform and raise your heart rate. It may help lower your blood pressure and cholesterol, balance your blood ...

Low intensity exercise encompasses activities that aren’t challenging and don’t increase your heart rate much. It can still provide health benefits, particularly when done more often. Exercise is ...