Rob Kardashian’s new relationship with Blac Chyna is helping him immensely, with the only male Kardashian family member reportedly losing 40 pounds already.

Blac Chyna’s best friend, Amber Rose, has talked about her helping him get healthy again by keeping him accountable with his workouts and cooking healthy meals for him at home.

According to TMZ, it’s really paying off. He reportedly works out five days a week with a trainer and he’s on a diet that his girlfriend is making him stick to: no carbs, no red meat, no fast food and absolutely no “cheat days.”

Even though it’s rumored Kardashian’s famous family doesn’t like Blac Chyna, especially his younger sister Kylie Jenner, it’s hard to argue that their relationship hasn’t been positive for him. Kardashian was diagnosed with diabetes and hospitalized in December, which was a wake up call for him.