Watch Kate Upton Pump Some Serious Iron

Kate Upton is putting in some seriously heavy lifting. The 23-year-old is one of the hottest women on the planet and now she’s revealing the surprising secret to her killer body.

The supermodel posted a video to Instagram of her lifting over 100 pounds just hours before hitting up the Vanity Fair Oscar party Sunday night. Back in December, Kate showed off the same landmine deadlifts while her trainer, Ben Bruno, could be heard encouraging her behind the camera. In February, she made headlines, posting a video of her weighted hip thrusts to Instagram.

“A lot of woman are scared to lift heavy weights because they fear they’ll bulk up and look masculine,” Bruno told The Insider With Yahoo of Kate’s sweaty workouts. “The key though is to focus on getting stronger on the right things.”

He added that Kate “chases strength gains on squats, deadlifts, and Romanian deadlifts… And she can do over 100 pounds for 10 reps. She does hip thrusts with around 200 pounds for 10 reps and pushes a heavy sled weighing close to 400 pounds.”

Ben also revealed that the Sports Illustrated model steers clear of crash dieting and focuses on eating protein while limiting her sugar and alcohol intake. “Kate has done an amazing job and it’s great to see her inspiring woman to train the right way,” he said.

Check out the video to see Kate Upton killing it in the gym, and tune in to The Insider With Yahoo on TV tonight for the latest in entertainment news.