Jump-Start Weight Loss Resolutions With Jessica Simpson's Trainer, Bob Harper, New Diet Advice [Video]

If you've established weight loss as your top resolution for 2015, it's time to consult the experts. From Jessica Simpson's celebrity trainer Harley Pasternak to The Biggest Loser diet guru Bob Harper, they're serving up their best weight loss tips for helping you succeed. Plus, learn about the newest diet drugs and supplements.

If you're short on time and big on goals, Harley recommends learning about a concept called NEAT, reported People magazine. Pasternak, who also trained Lady Gaga and Halle Berry, emphasizes that you don't even need to set foot in a gym if you can master this weight loss key.

"The first key... is what's called 'NEAT,' or non-exercise activity thermogenesis. In other words, exercise that occurs through normal daily activity like walking around or climbing stairs, taking the dog out, horsing around with your kids and doing household chores."
In addition, Harley recommends using resistance training. Check your schedule to find 30 minutes or more extra each week, whether it's five minutes daily or 10 minutes on alternate days. Then use whole-body exercises, such as side planks, to blast calories while you tone.
As for diet? As the Inquisitr reported, Pasternak emphasizes using a low-carb weight loss diet that emphasizes protein and slashes starchy carbohydrates. In his guidelines, an egg for breakfast trumps cereal, while piling on the turkey and tossing out the croutons at a salad bar is the key to dining out.
"Load up on a lean protein like roasted turkey, ham, or a lean cut of brisket. The idea is that you fill up on that stuff so you don't go overboard with the potatoes and breads."
Have you ever resolved to achieve specific, complicated weight loss goals, and then abandoned that resolution by March? Biggest Loser trainer Bob Harper told Access Hollywood that he's got the solution. And it's all about keeping it simple, such as focusing on a goal of firm abs or a clean diet.
"I think that when it comes to New Year's resolutions you have to be really careful not to make too many changes because that's what so many people want to do. It's like they come off the holidays and they're like I'm gonna just like go to the gym every day and I'm going to eat perfectly. By January 10, you're like screw this and so it's like you give yourself one goal, give yourself one challenge for the month."
As for Harper's advice on diets? He recommends a Paleo-style low-carb diet as well, as the Inquisitr revealed. The former vegan abandoned his plant-based diet when he felt that he lacked energy. And trying to hide his decision to beef up on animal protein proved embarrassing, Bob now confesses.

As a result, Bob keeps it simple when it comes to diet tips. Boost non-starchy green vegetables, add protein such as chicken, and he believes it's a formula for weight loss success.

"Dinner is one of my favorite ones... I have a huge salad with chicken, and that's what I eat. I do a chicken – I do it from rotisserie a lot of times, and I strip it off, throw it in there. I wish you could see how big this salad is!"
But what if you're following all the diet advice, working out faithfully, and still can't lose the weight? It may be time to tweak your sleep habits, advises Dr. William Lagakos, a specialist in weight management.
"So what's the hack? Food: do more of it, earlier in the day. Phase advance. Kind of like avoiding artificial light at night."
By turning off the cell phone, the tablet, and even the television hours prior to going to bed instead of while you're in bed, Lagakos cites studies showing that you can sleep more soundly. Add in eating earlier in the day, and you just might have the icing on the low-carb cake for weight loss.

Experts also emphasize that it's essential to talk with your own physician before starting or modifying your diet or exercise plan, or taking any new over-the-counter medications. Several new prescription diet drugs have become available which you may also want to discuss, as the Inquisitr reported.

The most recent prescription weight loss medication is designed for obese adults or overweight individuals with a health condition such as hypertension. And although Saxenda may help, the FDA guidelines for using it emphasize that diet and exercise are required for optimal results.

As for diet supplements or "weight loss miracles"? More than 90 percent surveyed who admitted using such supplements reported that the supplements did not work. Moreover, half of those survey complained of side effects ranging from feeling jittery to having digestive ailments. And because some side effects can be dangerous to those with certain health conditions, such as hypertension, experts emphasize the importance of discussing any types of supplements or OTC drugs with your own health care provider.

[Photo by Sonia Recchia/Getty Images for GILT]