The Heart Rate Zone Formula Is Flawed, Especially For Women. Here's How To Rethink Your Training.

Watch says you’re in the red but body feels fine? You’re not imagining it. Discover why 220 minus age fails women and how to ...

Forget the gym — this 25-minute 'Jeffing' workout builds your strength and boosts your metabolism

This Jeffing-inspired functional workout builds a strong body and boosts cardiovascular fitness by combining bodyweight ...
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This 40-minute treadmill workout cut my 5km running time by 8 minutes - here's how to do it

This workout consists of four-minute bursts of exercise, done at 85 to 95% of your maximum heart rate. Afterwards, you get ...