Worried about sabotaging your diet during upcoming holiday meals?
In the video above, Pasternak -- who has trained Amanda Seyfried and Lady Gaga -- suggests eating in stages, and making multiple trips to the buffet.
To avoid eating with your eyes and not your stomach, our expert says it's best to fill up on high-water foods and lean proteins first, before indulging in dessert.
"Satiety, or the idea of feeling full, actually lags behind ingestion. It takes a few minutes to feel full," Pasternak tells Us.
For more of the trainer's top nutrition tips, check out the video above and tune in to his new transformation series, The Revolution, this January on ABC.