The chrome-accented décor of the facility as well as the bright red and yellow of the machines might hearken back to the 1950's, but the equipment is completely 21st-century. Guests jog, cycle, and step away calories on cardio machines equipped with personal LCD screens that broadcast DirectTV. A supervised playroom keeps tots occupied while their parents work out, and group fitness classes such as Zumba let guests tone muscle in tandem. After a workout, guests can take sips at a smoothie bar styled like an old-fashioned diner, or get bronzed in a tanning bed.