Most people are going to have different fitness goals, at least that's the theory behind Moxie NYC. Some train as athletes, others might want to lose weight after having a baby, and more still might need to rehabilitate from injuries. Victor Motta recognizes the diversity in his clients' objectives, which is why he keeps things personal. During one-on-one sessions, the certified trainer puts his clients through customized fitness regimens designed to render specific results, such as stronger boxing skills or more toned muscles. And like a photographer with a full-length mirror, Mr. Motta can count himself as a client. When not working with others, he trains as an amateur boxer and martial artist.