In our transition into fall, we tend to work out a little less and eat a little more. Why? It's simple, really: we're not spending every weekend at the beach, when the idea of flashing a bikini often motivates us to be on top of our sweat schedules. But if heading into a humid gym to log miles on the treadmill or elliptical sounds less than appealing, celeb trainer Harley Pasternak has one word for you: Don't. When he trains clients like Julianne Hough, Rihanna and Katy Perry, he gives them all one piece of equipment, and has an easy trick to staying out of the gym. Watch the video to steal his no-gym secrets, and watch yourself shimmy right back into those skinny jeans.
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