Making Him Sweat! Robert Pattinson Is Getting Ripped For His New Girlfriend FKA Twigs, Trainer Reveals

Robert Pattinson has a hot new romance with girlfriend FKA Twigs, and his personal trainer tells RadarOnline.com exclusively that the actor has been “working out really, really hard,” most likely to impress his new found love!

“Sometimes we work out 4-5 days a week,” says Harley Pasternak, who has trained Pattinson for many years.

As RadarOnline.com previously reported, the Twilight hunk, 28, and his British singer girlfriend (whose real name is Tahliah Barnett), 26, took their romance public on September 21, when they were caught holding hands in Venice Beach. She is reportedly living with him in Los Angeles after recently relocating from New York City.

“Robert’s workout with me is mainly resistance based,” says Pasternak, who has trained huge celebrities such as Jessica Simpson and Kim Kardashian .

“He stays lean by strength training and eating really clean,” he tells RadarOnline.com.

Pattinson must also getting quite a workout with Twigs, as they can’t even keep their hands off of each other in public!

Pasternak is the author of several of New York Times best-selling fitness books. To go along with his fourth and latest book called The Body Reset Diet, which involves three smoothies per day in the first five days, he has created his own blender that will be coming out in just a few weeks.