If you wear a Fitbit, Apple Watch or a similar wearable while working out, you already know that you have a useful tool right at your fingertips. One especially helpful feature wearables like these ...

Heart rate zones are a way to describe how hard you're working during a cardio workout, like running or cycling. The faster your heart beats, the harder you're working. So an easy jog might have you ...

Train for the moments climbs get messy—surges, steep pitches, and quick recoveries.

Add Yahoo as a preferred source to see more of our stories on Google. If you wear a Fitbit, Apple Watch or a similar wearable while working out, you already know that you have a useful tool right at ...

These days, everyone from the average Susan to the hardcore data-loving wellness enthusiast has the technology to track just about anything in the name of self-optimization. A ring wearable tells you ...

Strava's new Training Zones feature promises to help runners and cyclists better understand their training load across metrics like heart rate, power, and pace. That sounds like useful information, ...

Few would disagree that cardio, also called aerobic exercise, is good for your health. Of the 10 most common chronic diseases, seven are "favorably influenced by regular physical activity," according ...