I've had to focus on the fact that a lot more people don't want to work out in the confines of a gym anymore.

January is the best time of year for gym owners. You all come. It's great! And then, by Valentine's Day, you're not coming in anymore.

Nuts have gotten a bad rap because of their high fat content. But their protein, heart-healthy fats, high fibre, and antioxidant content earn them a place in your daily diet. I often say 'less is more,' and portion control is key to healthfully enjoying nuts.

I like quick and efficient circuit training.

I had a client who was getting ready for the Oscars, and all she ate was one meal a day - of two boiled eggs! I was able to persuade her to add some almonds and a protein shake and some vitamin supplements. It's a self-defeating strategy. You need to eat enough, particularly protein, to build lean and toned muscle in the first place.

I equate exercising with brushing my teeth or taking a shower: It gets my day going.

Don't fool with machines you're not familiar with - stick with the treadmill and elliptical.

It's interesting to work with celebrities; they are very goal-oriented. But they still have to put their shorts on one leg at a time.

If there's one thing that we need to avoid, all of us - young, old - it's processed, refined sugar. There's nothing good about it.

Slow-twitch muscle fibers are mostly used for long endurance exercises like aerobics, swimming, and distance running. Fast-twitch muscle fibers are generally more powerful and are activated during maximum exertion exercises like heavy weightlifting and intensive, short bursts of sprints.

Despite popular belief that watermelon is made up of only water and sugar, watermelon is actually a nutrient-dense food with a high amount of vitamins such as A and C, minerals such as iron and calcium, and is high in antioxidants.

I always do some sort of plank exercise - whether it's a regular plank or a side plank, I always incorporate it into my workout.

Avoid any exercise that is quad-centric. None of my clients come to me because she wants bulkier quads - you aren't fitting into your skinny jeans with those!

In addition to intense workouts, you need to be mindful of what you are feeding your body in order to keep it looking trim and tight.

I have never been in a hotel - from the two-star types all the way to five-star - that does not have a gym.

A jump rope is cheap, it's portable, and you can do it anywhere.

The moment your kids start crawling, they are exercising. To them, movement is fun and organic... It is adults who have turned daily activity into a mandatory chore.

On weekends, I'm chasing my six-year-old girls around the city. That's my cardio!

The most common mistake when women go into the gym is to watch someone else do an exercise and start doing the same one.

Eating foods like asparagus and celery will help keep you full and debloat you.

If you look at Jane Fonda's first tape, it's like, 'How to injure yourself to music.'

The Swiss Ball Pike is a total-body exercise that is especially great for your core, arms, and lower back.

Eating is not a bad thing; it's not a curse. And I think to have long, sexy, lean, tight muscles, you need to feed them with good quality proteins and make sure you stay hydrated.

Training is not just about a perkier butt. It should give you a healthier outlook on life.

As you get older, you really need to be much more dialed in to the things you eat.

Dinner should be low in caloric intake. Foods like fish and broccoli are very good choices.

Working out is for both the mind and body, and being in a beautiful setting is conducive to a more pleasant experience. The more you enjoy your surroundings, the more likely you are to work out longer and harder.

If someone is worried about bulking up their quads, they're not going to do a traditional squat. They're going to do a wide-stance squat or a plie squat, which is second position dance, opening up your legs and bringing the focus to the inner thighs and not to the quads.

Walking is great because it's an amazing exercise, and it also helps to clear your head and relieve any built-up stress before the work day begins.

Women often use weights that are too heavy. I like to stay in the 3- to 15-pound range. If you're more fitness-experienced, use weights in the 8- to 10-pound range. If you're a beginner, start in the 3-pound range.

Ideally, we should be controlling what we eat by cooking for ourselves.

I think that we all plateau, from fitness experts to regular folks at every fitness level. What that means is we need to change our exercise routine, food, and attitude.

It's impractical to assume people aren't going to eat out or eat late or even have pizza occasionally. And all that's fine as long as you work out, even just for 10 minutes a day.

If you go on a calorie-reduced diet without increasing your level of exercise, at a certain point, your body will lose a little weight and then plateau. You need to trick your body to burn more fuel than you're ingesting so you can continue to lose weight.

People tend to lean on cardio machine handles, and their posture begins to suffer.

If motivation is an issue, I would try to get out of your house to work out, not just go into the basement.

As parents, we have a responsibility to teach our family and our children everything they need to know about good health and eating and movement, and just an everyday healthy life.

Move with them, be active with them - whether it's swimming or scooting or bicycling or playing soccer. Engage your child.

We live in a society where healthy choices aren't usually the most popular choices.

Combining proteins like egg whites and oatmeal with berries is the best and most important food of the day. The mix will help energize you. And you should have it in the first 30 minutes of rolling out of bed.

Lunch is the meal where you put carbs in, such as lentils and beans.

I have both my daughters on gluten-free diets, and you can see the difference. They are only four years old, and it definitely changes their mood. You can see that for sure.

If you do the treadmill or elliptical all the time, try adding the rowing machine or stair climber, maybe get a new bicycle. You want to keep it fresh.

Being pregnant is not license to forget all the rules that you abide by when you're not pregnant. Moving your body, getting enough sleep, staying hydrated, and eating proper foods throughout the day are even more important when you're pregnant.

If you take care of your body, it will take care of you.

For me, the way I go about training all of my clients is by using short bursts of interval training - it's the most effective for burning calories as well as for cardiovascular health and making you stronger.

The point of workouts are no longer to do double 60-minute sessions or go to classes five times a week. You don't want to burn out and beat your body up.

The program for me, 'The Ultimate New York Body Plan,' is about realizing the best you and really loving the body you create.

I befriend most of my clients, and I like to go out with them. I like to socialize with them: They're interesting.

I find often people wait to order until I order. And then I love upsetting them. Sometimes I'll order a cheeseburger and macaroni and cheese.