Rihanna
Rihanna is all about her curves, so her workout routine is strictly about health and stamina rather than weight loss.
She trains with Harley Pasternak, who created a special program designed for her involving running, as well as basic moves such as squats, lunges, and planks.
Jennifer Anniston
At age 51, Jennifer Anniston makes sure to work out every day for an hour and a half each session! You can imagine how hard she has to work to keep this up, sometimes even working out before a 3 am shoot.
She is constantly switching up her routine with boxing, jump rope, and strength training. She is also a yogi. For Jen, the most important part is that she is always being challenged.