"Rihanna looks amazing right now. I have put her on a special 25-minute-a-day workout that consists of five mini workouts. She does it five days a week, wherever she is in the world," contactmusic.com quoted her trainer Harley Pasternak as saying.
"One of my trainers travels with her to ensure she does it, but as it only takes 25 minutes and can be done anywhere, it's easy for her to fit around her busy schedule and even her holidays," he said.
"We train when she's ready. Even if we're on the road and it's 2 a.m. in the morning, I'm on call 24X7 with her," said her other trainer, Ary Nunez.
Besides her exercise plan, Rihanna has also been advised to eat regularly throughout the day, and she also gets a treat day when she can gorge on whatever she desires.
"She eats five small meals and snacks a day. These are made up of healthy carbohydrates like vegetables and fruit, healthy fats, like nuts or avocado, low-fat protein, whole grains and sugar-free drink like green tea," said Pasternak.