celebrity trainer

If you're looking to stay in shape during bikini season, check out four moves that trainer Jackie Warner swears by. During the "hardcore" routine, Jackie told us it may feel like you can't lift yourself up again, but that's the perfect time to kick in the extra motivation.

Dumbbell Squats
Two sets of 15 reps with 15-pound dumbbells

1. Stand with your feet hip distance apart, holding a dumbbell in each hand.
2. Slowly bend your knees as if you were going to sit in a chair, keeping all the weight in your heels. Don't let your knees move beyond your toes, and don't let the knees roll out or in. The knee should track toward your second toe. Squat down as low as you can, keeping your head and chest lifted, your spine long, and your shoulders relaxed.
3. Press through your heels and slowly straighten your legs to stand up.
4. Make sure to keep your spine neutral. Do not round your back.

Jump Squats
10 reps

1. Stand with feet shoulder width apart, arms at sides.
2. Start by doing a regular squat but jump as explosively as you can when you rise up, reaching for the ceiling.
3. When you land, lower your body back into the squat position to complete one rep.

See the rest of Jackie's workout after the break!

Ever wonder how celebs like Rihanna, Lady Gaga, and Jennifer Hudson get those enviable bodies? They've got a secret: celebrity trainer Harley Pasternak. Harley transforms Hollywood bodies with his 5-Factor training philosophy — a 25-minute workout, five days a week. (This may sound easy to you, but trust me, it's not; at Subway's recent Superfoods Training event in LA, I worked out with Harley, and those 25 minutes were intense!)

One way Harley keeps stars looking svelte? His muscle-building philosophy. Harley says that many people overstrengthen the front of their bodies — through common exercises like chest presses, bicep curls, crunches, and squats — while neglecting back-of-the-body muscles. This leads to "shorter muscles, shorter bodies, and poor posture," Harley explains.

Read on for the exercises Harley recommends you should be doing instead.

Shaun T, the personal trainer who's motivated millions with his at-home workouts, knows how to get people in shape in a short amount of time. After all, his Insanity workout program promises incredible results in just 60 days of sweating and jumping in front of your TV.

With Summer a mere few weeks away, we spoke with Shaun about how to get in shape for anything — whether it's a beach holiday, wedding, or event — when you've only got a little time. Find out his recommendations below!

Watch your drink calories: "Don't drink your calories. That's the number one rule of thumb: not to drink your calories. It will eliminate so many calories in your body. Everybody knows that sugar that's not burnt off eventually turns into fat," says Shaun, who's also holding live workouts nationwide to promote his partnership with Powerade Zero. Shaun recommends portion control and cutting the amount of sugars and carbs in your diet in half, but "still ensure you have enough energy during the day," he says.

Kick it up a notch: "If you're a person who works out at the gym, try to take [fewer] breaks," Shaun recommends. "If you're a weight lifter, while you're not doing weights, try to do some different cardio exercise in between to try to ramp up the calorie burn."

Keep reading for more of Shaun T's last-minute diet and exercise advice!

Last-minute Summer shape-up plans may help you shed pounds and tone fast, but they do involve a lot of hard work and dedication as you race against the warm-weather countdown. So as you ramp up your healthy routine in time to don that bikini, make an even better resolution: stick to your new healthy resolutions, even after the Summer season fades.

Whether you're detoxing with a debloating meal plan or kicking your workouts up a notch, Summer prep can be the best time to jump-start a commitment to a healthier lifestyle, not only because you're making healthy eating and exercise a habit, but also because waiting until the last minute to prep for a beach vacay can be stressful! Insanity's Shaun T says it best: "Make it a lifestyle change so next Spring you're not cramming for the test," he recently told us. (In the meantime, you can read his tips for last-minute Summer prep here).

Does this season's frantic shape-up routine have you vowing to make a healthy diet and exercise routine part of your regular life? Luckily, you don't have to do it alone; follow our tips on how to stick to an exercise routine, and this time next year you can rest easy knowing you don't have to beat the clock!

We are pumped to share one of our fave stories from Shape here on FitSugar. This week Shape turns to celebrity trainer Jay Cardiello for some help!

Ah, that infamous area along the back of your arms, the nemesis of so many women. How do you tackle the jiggle? First, I want to tell you what not to do, as people are often tempted to take the wrong course of action. And that is the concept of spot reducing, or lowering fat stores in one specific area of the body. It is essentially impossible to accomplish and should not be a part of your fitness regimen. Fighting arm flab requires more than just spot treatment!

In order to tone the backs of your arms, which is where your tricep muscles are, you have to remember this: specific exercises to increase your lean muscle mass will get you results, but you must also decrease your fat intake without risking too much muscle loss. (Sound familiar? Have you managed to lose fat, but still carry some extra bulk around the tricep?) So, to lose the wiggle and jiggle, be sure to eat a healthy balanced diet with proper nutrients; get at least six to eight hours of sleep so that your body can repair, recover, and build muscle; and consistently maintain your exercise program. And be sure to incorporate these five flab-fighting exercises into your workout routine.

The Ultimate Abs and Arms Workout

See Jay's arm workout after the break!

Want to get toned arms like Michelle Obama? FitSugar reader Fashion Cents does, too, so she visited Michelle's trainer Cornell McClellan. Check out this arm and back workout video that she and Cornell filmed together; Fashion Cents shared it in our Get Fit For Summer community group.

When I want to get fit for the Summer, I turn to First Lady Michelle Obama's personal trainer, Cornell McClellan. If he can have her arms the envy of the country, at least he can get me in shape for my local beach. So in this first video of four, Cornell shows me how to tone my arms and back so I will be ready for all of the sleeveless and backless styles this season. The exercises are so easy that you can do them at home with soup cans. So all you really need is motivation.

Thanks, Fashion Cents — we love getting inspiration from our readers! Have your own Summer workout to share? Post it in our FitSugar Community; it might even be featured on the homepage.

We are excited to share one of our fave stories from Shape here on FitSugar.

Barry's Bootcamp (BBC), the high-intensity workout that helps celebrities like Kim Kardashian, Jessica Alba, and Jake Gyllenhaal stay in amazing shape, has opened its first East Coast location in Manhattan! The studio is known for its nightclub-meets-boot-camp-style during hour-long classes that mix strength training with treadmill intervals. The result is a high-intensity workout that burns fat (up to 1,000 calories per class) and tones muscles.

In an exclusive interview with Shape.com, Barry's Bootcamp co-president Joey Gonzalez reveals where he thinks most women's workouts go wrong — and what they can do to fix it.

Common Misconceptions: Where Your Workout Goes Wrong

1. You do one or the other: cardio or body sculpting. "Don’t get me wrong, half of our class is cardiovascular, but the strength training is equally as important, and that's really what helps kick metabolism into high gear," Gonzalez says.

2. You ignore weights. "What you're doing when working out is building muscle, and muscle is an integral part of actually burning calories throughout the day. With weights, your body is burning 'x' amount of calories more an hour than it was before you did it — and that’s not true of cardio. That’s why women who tend to use weights and bring it into their regular exercise program are not only stronger and healthier, but on average have better bodies. If you touch their arms they're strong, they're not soft. Women complain about 'flarm' (laughs), the flabby arm area, and, really, the best way to target that is working your triceps."

See the rest of Joey's tips after the break!