The home renovator and Property Brothers star revealed that, in addition to learning how to dance of course, he experienced a staggering 34-pound weight loss!
"I've always been a pretty healthy guy, but I haven't done as much cardio as I should have," Drew, 39, toldPeople after Monday night's performance show, which ended with his elimination one night before the Season 25 finale.
"And I never thought dancing would give me this much, so I will definitely [keep the weight off] with more sports -- that's how I like to get my cardio, and then maybe put a bit of muscle back on. I've dropped a lot of muscle."
Drew's fiancee Linda Phan is apparently pleased with the results, as Drew quipped, "She's like, 'Oh, hello abs!'"
The HGTV star will no longer have dance rehearsals with his professional partner Emma Slater every day, so he'll need to find a different way to release his energy.
"I just have more energy, and I'm not stopping dancing," Drew admitted. "I'm going to be the most annoying person ever because I'm going to dance everywhere I go! My brother is going to be like, 'Stop dancing on the show already.'"
Drew stars on Property Brothers with his identical twin brother Jonathan Scott, and the brothers' new spinoff Property Brothers at Home: Drew's Honeymoon House -- which will also feature Linda -- is set to premiere on November 22.
"Jonathan and I have been asked for years to both do [Dancing with the Stars] as a brother vs. brother and I keep teasing [him]," Drew told People, adding that he's not sure whether fans can expect to see Jonathan on a future season of the reality ballroom competition.
"I'm like, 'Hey, I did it. I guess I one-upped you.' You have to do reverse psychology with Jonathan and maybe he'll come and do it."
But Jonathan would have his work cut out for him since Drew made it all the way to the Dancing with the Starsfinals.
"Honestly, just to be in the final four means everything," Drew gushed. "I honestly didn't think that I would make it here, and it's all because of this gal right here, [Emma]. I couldn't thank her enough!"
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Drew also joked after the show that he was looking forward to a big meal to celebrate how far he's come.
"We're going to go out and I'm going to eat a lot tonight," Drew told the magazine last night. "I want a burger and hot dog and sushi. Is that a weird combo?"