Just like burgers, cupcakes, and froyo before it, there is clearly a new business boom in progress in Arlington. This latest business trend, at least, has the promise of subtracting pounds rather than adding them.

Boutique fitness studios have been popping up all around Arlington lately, and as if to reinforce the point, the two latest entrants have very similar names: E60 and F45.

F45, an Australia-based fitness franchise, is “opening soon” at 1101 S. Joyce Street in Pentagon Row, though an opening date has not yet been announced.

F45 describes itself as “a Group-Training facility that feature[s] the most dynamic and effective training styles to date.”

Meanwhile, a fitness studio called E60 — no relation — is getting ready to open next month in Rosslyn.

Located at 1524 Clarendon Blvd, E60 Fitness is described as the “home of Elevate 60, a gut-busting high-intensity interval training class” which “uses custom equipment and a hybrid of several exercise concepts along with heart rate monitoring technology to provide a uniquely exciting and invigorating workout.”

A grand opening for the business, which has an existing location in Ashburn, is set for Saturday, June 3.