I’m a personal trainer who's tested products for five years. The best fitness trackers are supposed to enhance your fitness journey, not make it harder. But tracking and interpreting your health data ...

“IF I HAD to choose one number to measure for how likely someone is to live long and well, there’s nothing I’d rather have than VO2 max,” says Aaron L. Baggish, MD, who put cardiovascular performance ...

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We may receive a commission on purchases made from links. Electrical diagnostic work is one of the most challenging parts of automotive repair. It can be incredibly daunting for beginners or DIY ...