Webfree weights, such as dumbbells, barbells, and kettlebells, provide a greater range of motion and allow for more natural movements. Free weight exercises engage. Webplanet fitness workout in this edition of a series of planet fitness appropriate workouts, we provide a 3 day full body workout one could do with the equipment at. Webso, who needs a ton of free weights when you have the variety of machines that planet fitness offers? Whether you're targeting your arms, shoulders, back, or.