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Feel Like a Girl on Fire (in a Good Way) With Alicia Keys’ 3 Go-To Endurance Exercises

Anna Kaiser has trained her fair share of celebrities and regular exercisers alike over the years. But when she’s working with singer Alicia Keys, she knows she can expect something a little different. “I’ve never seen her check her phone,” says Kaiser. “Every other celebrity I’ve ever worked with—and also non-celebrity—checks their phones, but Alicia […]