Jennifer Aniston works out four, maybe even five, but definitely at least three times per week, with each session running between 45 and 60 minutes. “But if I only have 10 minutes to sweat and move my body,” she recently said, wearing aviators, a red leotard, and sweatpants, backgrounded by a glossy California kitchen, “then 10 minutes is all I need.”

Her favorite pieces of equipment include something called a P.3, a Jennifer Aniston–length cord with a Velcro strap and weighted ball at either end, and some other things called “gliders,” or discs that grant underlying surfaces the friction of a flawless ice plain. “They’re darn hard,” Aniston says. “You can break a sweat within just minutes of doing pikes with gliders.” They fit in your bag; you can take them on vacation, she says.