The best dance cardio classes always have high-energy music, motivating instructors, and easy-to-follow moves — because no one wants to be lost or uninspired amid all the fun. Twins Danielle and ...

Mariska Hargitay had some pep in her step on Halloween. The Law & Order: SVU star, 60, joined in on the festivities by publicly performing a viral Halloween-themed exercise routine created by actor ...