To be the best, you need help from the best — which is exactly why Octavia Spencer has recruited the help of her Instant Family co-star, Mark Wahlberg, to help transform her body.

The Shack star, 46, has teamed up with the Mile 22 actor, 47, for a unique training partnership — and the results are already starting to show. Octavia has been documenting her workouts on Instagram and in a video she posted on Oct. 28, she credits Mark’s Performance Inspired supplements for the assistance in slimming down.

“I never go sleeveless. But here is what I want to show you. I’ve been working out for years and the cellulite on my arms has NEVER gone away. It’s melting away from my thighs, too!” she captioned the clip, which features her showing off her arms.“ The changes I’ve made? @performinspired supplements. Combined with balancing nutrition and the right workouts the changes are amazing.”

The Boogie Nights alum can’t help but praise Octavia for her commitment and dedication in losing weight. “It’s 5:24, I’ve gotten hundreds of requests from very, very close and dear friends about coming over, working out with us, and joining the 4 a.m. club,” Mark said, referring to his early-bird workout group. Turning to the Oscar-winning actress, he gushed, “This one [was the] first one to show up, shows up at 3:30 and puts in the work with Brian like no one has ever seen. I am so impressed. Oh, wow… talk about an inspiration.”

“I really am so impressed, you know what? You are really an inspiration. Talking about everything she’s going to accomplish, she went out there and made it happen and this is just another extension of that,” he continued in the Instagram video, posted on Sept. 24. “You are a true champion.”

To check out Octavia’s weight-loss transformation, follow her on Instagram here.