Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

Most of us try to be good at everything. This test reveals the one thing you should actually be doubling down on.

The spotlight returned to Gobbler’s Knob in western Pennsylvania, when handlers of a groundhog named Punxsutawney Phil said he predicted six more weeks of winter — not an early spring — after he saw ...

The first fitness tracker made by Renpho is durable and long-lasting, but its performance hiccups and utilitarian design massively undermine its value.

Malaria remains the most deadly parasitic disease in the world. Although it is not endemic to countries such as Spain, imported cases are diagnosed each year in people returning from areas where the ...

Detroit Lions defensive tackle DJ Readers joins 'The Insiders' to talk about his community work and the Lions chances of making the postseason. NFL fantasy analyst Adam Rank brings a cinematic twist ...