A heart rate that’s too high, often over 100 beats per minute, is known as tachycardia, a condition that’s not necessarily a concern. A person’s heart rate can rise briefly because of stress ...

People who reported the highest level of physical activity, exercising moderately to vigorously for at least 150 minutes per week – or for 22 minutes a day – were at a significantly lower risk of ...

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but added "you also need to get your heart rate up high enough," to the moderate or intense levels. Of course, weight loss isn't all about exercise — nutrition also plays a big role.