When it comes to fitness, we tend to be creatures of habit. We like to have our own gear when we work out or go for a run, because we trust it. Our shoes, Dri-Fit shirts and shorts, towels, headbands, water bottles—it's our gear and there's no other gear like it. So, when it comes to using complimentary or rental fitness gear at a resort, it's understandable if you're hesitant. But you don't need stress if you simply pack the right gear and the basic essentials.