We've all heard about cardio training, but it's not always applied correctly according to personal goals. That's why it's ...

If needed, instead of rucking and/or running, try nonimpact options such as swimming with fins, biking or using an elliptical ...

However, when you buy something through our retail links, Condé Nast may earn an affiliate commission.As a certified personal trainer and fitness instructor, I’m a big fan of IRL classes, but the best ...

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