PACIFIC PALISADES, LOS ANGELES (KABC) -- Josh Popkin has been doing F45, a 45-minute interval workout for 10 months. It was brought to California by fitness pro Mark Hewlett who feels changing a ...

Typically, when a new gym chain launches in the area, you’d expect it to open one location — maybe two — to test out the market. If people like it, perhaps they’d expand into new neighborhoods. But ...

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If you don't know what F45 is, it may just look like a typo but in fact, it's the Aussie workout sensation that's as gritty and gruelling as group exercise gets. Celebrities such as Nicole Richie and ...