Last week, Fitbit announced that they would be launching new wearables this spring: the Fitbit Versa Lite, Fitbit Inspire, and Inspire HR, as well as the Fitbit Ace 2 for kids. Today, three of those trackers are officially available to purchase for presale on the retailer's website (the Ace 2 will launch later this summer). Here's what you need to know about each of the new models, as well as how they differ from existing Fitbits.

First things first: What are the big changes?

In general, these new Fitbit products aim to make the smartwatches and fitness trackers more accessible and affordable for everyone. The company also announced that they will soon be redesigning the Fitbit app to make it easier to personalize your dashboard and connect with others in the community.

Also good: All of these new wearables are swim-proof and come with an impressive new line of accessories.

Fitbit Versa Lite (center)

The Versa Lite ($160; fitbit.com) is the latest Versa smartwatch—and it's $40 cheaper. Although this is a streamlined version of the original Versa, the Versa Lite still has the same core features, including sleep, heart rate, and general activity tracking; access to a slew of handy apps and GPS; and a battery that can hold its charge for four days at a time. It's also available in fun new colors, including eye-catching mulberry, bright marina blue, and a pretty lilac, as well as basic white. Note that certain features from the Versa are missing from the Versa Lite, such as the ability to stream music. But if you're after a pared-down, more affordable smartwatch, this is a terrific choice.

Fitbit Inspire HR (left)

Sleek and streamlined, the Inspire HR ($100; fitbit.com) is Fitbit's newest 24/7 heart rate tracking device. It lets you monitor your sleep stages, cardio levels, and physical activity with more than 15 goal-based exercise modes and up to five days of battery life. Also cool: You can access guided breath sessions and have the ability to tap into your phone's GPS to see real-time distance traveled. The Inspire HR is available in white, black, and lilac (pictured).

Fitbit Inspire (right)

Now Fitbit's most affordable tracker, the Inspire ($70; fitbit.com) is a pared-down version of the Inspire HR. The Inspire has many of the same core features, such as all-day activity and calorie burn tracking, sleep tracking, and automatic exercise recognition, all with a sleek touchscreen and the same battery life.

Unlike the Inspire HR, it does not have the heart rate features (you cannot monitor 24/7 heart rate, resting heart rate, or heart rate zones, for example). The Inspire is also missing a few other features, such as the exercise modes and breath sessions (you can compare both models on Fitbit.com). But all in all, this is still an impressive tracker at an unbeatable price point.

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Business in the front, party in the back—and no, we're not talking about a long-dead hairstyle. It's actually the latest trend in workout tops, which are all about showing off your sexy back and shoulders with criss-cross straps and big cutouts. But, the best part? They look incredible while you work out, and transition seamlessly from sweat to street. Pair them with your favorite mesh leggings for a super on-trend look.

Here's a bunch of our favorites:

Athleta Full Force Tank ($64; athleta.com)

Perforated mesh fabric keeps you cool and dry through hot yoga class. A conservative scoop neck contrasts the deep, sexy plunge the top takes in the back.

 

 

 

Athleta Shadow Stripe Energize Top ($59; athleta.com)

This strappy tank offers style and substance, with a built-in bra and breathable fabric that is as at home at brunch as it is at Barre class.

Photo: Athleta.com

 

 

 

 

Nike Elastika Elevate Tank Top ($40; zappos.com)

Nike Dri-FIT technology wicks perspiration, cooling you during even the hottest summer runs. Flatlock seams prevent chafing.

Photo: Zappos.com

 

 

Koral Vortex Sleeveless Top ($92; bandier.com)

A cotton-like high-performance fabric wicks sweat and oozes style. The cutouts above the waist show off your killer physique, while the racerback flaunts those sculpted shoulders you've been working on.

Photo: Bandier.com

 

 

Dylan Racerneck Top ($48; zobha.com)

This fierce top sports a zipper running down the mesh panel on the back.

Photo: Zobha.com

 

 

Mukha Yoga Cami ($105; sweatybetty.com)

Don't let this top fool you–it means serious business. The totally seamless design features a built-in bra with removable pads, ultra-stretchy material that moves with you every which way, and delicate, yet strong straps in the back.

Photo: Sweatybetty.com

 

 

Splits 59 London Strap Back Tank ($82; nordstrom.com)

This super-sexy top would work out at the club, but is actually made of a high-performance Supplex-Lycra blend meant for wicking sweat during intense workouts. Flatlock seams prevent rubbing and chafing and adjustable straps allow for a custom fit.

Photo: nordstrom.com

 

 

UA Cool Switch Tank ($35; underarmour.com)

With more than seven color combinations, this top is a must for any gymgoer. Besides looking good, it has Cool Switch technology to pull heat away from you, keeping you fresh and comfortable all session long.

 

 

 

Photo: Underarmour.com

 

 

Zella Her Layered Racerback Tank ($38; nordstrom.com)

Pair this top with a bold, bright sports bra: Deep armholes and a racer back will show it off.

Photo: Nordstrom.com

 

 

ALO Vapor Tank ($50; zappos.com)

A chic cutout and feminine draped back makes this top a true standout.

Photo: Zappos.com

 

 

Danskin Two-fer Tank ($38; danskin.com)

If you ever took dance lessons as a kid, then you probably remember Danskin. What you may not realize is that the dancewear company also makes gorgeous workout clothes for adults, like this tank. The flowy top has deep armholes and a racer back that reveal a built-in bra.

Photo: Danskin.com

 

 

Velvet Rose Women's Double Layer Tank ($30; target.com)

Gotta love Target: For $30, you get an on-trend tank with a built-in bra and super-lightweight fabric.

Photo: Target.com

 

 

Old Navy Burnout T-Strap Tank ($15; oldnavy.com)

This relaxed-fit tank can be paired with jean shorts for a casual Saturday, or leggings for a light yoga workout. Just keep in mind that it's 35% cotton, which means it may not keep you as cool and dry as some of the other options on this list.

Photo: Oldnavy.com

 

 

Soybu Brooklyn Tank Top ($39; zappos.com)

Wear this top in HIIT class or as a beach coverup—either way, you'll be sweating in style.

Photo: Zappos.com

 

 

 

 

Breaking up with your pedicurist, tailor, and electrician? Easy. Breaking up with a best friend, boyfriend, or girlfriend? Way less easy.

But another tie that can be hard to cut—and hard to know when to cut? Your ties to your gym.

Between fitness plateaus, lack of cleanliness, and a way-too-long commute, there are tons of signs it's time to dump your gym—whether it’s a boutique studio or big box fitness facility. Below, nine reasons to join a different gym, according to experts.

RELATED: 10 Mistakes That Will Make Everyone Hate You at the Gym

The broken equipment isn't getting fixed

If you lived in an apartment with broken appliances that the landlord never got around to fixing, chances are you’d either take legal action or find a new place to live when your lease was up. Similarly, when equipment breaks, a well-run gym will take the necessary measures to get it fixed—and quickly, especially in the age of overnight shipping and TaskRabbit. If it’s taking weeks for broken equipment to get fixed, it’s reflective of a gym that either doesn’t have the funds or is apathetic about the conditions of the space. Either way, it’s a sign your gym deserves dumping.

It takes you longer than 30 minutes to get there

How often have you wished that there were more than 24 hours in a day? Exactly. Rhetorical question. Spending a long time commuting to the gym is an automatic reason to switch up your sweat session. For some people—depending on where you live—even 20 to 30 minutes may be too far. In cities, for example, it’s wise to pick a gym that’s within 15 minutes walking or subway distance. More than that, and it’ll be easy to find an excuse when it’s cold, dark, or late. If the gym is close, you’ll have one less excuse for subbing the barbell (or bootcamp) for Buffy reruns.

The fitness classes offered just aren't doing it for you

Maybe when you joined the gym you liked the class schedule and instructors. But somewhere along the way your fave instructor found a new job and the Pilates class you like was swapped with Zumba or a HIIT class you can’t get into (so. many. burpees!). Use this as an opportunity to scope out other gyms' class offerings. While you’re there, pay attention to the type and timing of the classes to know if they'll make things more exciting for you.

RELATED: 9 Thoughts Everyone Has the First Time They Try a Fitness Class

You're overpaying

A recent survey from supplement and fitness company Myprotein found that Americans spend an average of around $34,000 on gym memberships, personal trainers, or workout plans over their lifetimes. “One sign that should make you consider breaking up with your gym is when you start to balance your checkbook in order to afford it,” says iFit trainer Becca Capell. While the financial tipping point will be different for everyone, there are a number of affordable alternatives that fitness enthusiasts can use for the sake of their bank accounts. Capell recommends getting a treadmill or rower and a set of weights to build an at-home gym. There are also countless free fitness apps that are both challenging and accessible for every level.

The space is dirty

Gyms are filled with sweaty people. Some gyms cultivate a community where everyone wipes down their equipment after use. Some gyms don’t. But beyond just treadmill and kettlebell handles, there are tons of places in a gym that need to be cleaned. If there are hairballs in the corners, grime on the showers and sinks, dust on less popular equipment, and holes in mats or carpeting, it’s a dirty gym. Considering that you can pick up infections at a dirty gym, this should be an automatic out.

There's zero community

Forming a #fitfam may be more important to some people—CrossFit athletes and yogis, for example—than others. But if you haven’t made acquaintances within the first few months, it’s worth considering a swap, says certified strength and conditioning specialist Alena Luciani, founder of Training2xl. "I work at a place where everyone knows your name. But even if your gym isn’t that friendly, usually within three or four months, little communities are automatically formed by people who show up to sweat at the same time."

You’ll have to ask yourself if community is important to you personally, but a gym friend group can add an element of accountability and comfort. “At the very least, you don’t want to go to a gym with a bunch of dudes who annoy you,” Luciani jokes.

RELATED: My CrossFit Transformation Was Much More Drastic Than I Expected–But Not for the Reason You'd Think

The overall vibe isn't encouraging

“There’s definitely a vibe when you walk into a gym. If you walk in and the vibe makes you feel self-conscious or generally discouraged, switch gyms,” says Luciani. It’s a huge warning sign if the instructors and staff aren’t friendly and if the clientele put out a negative or overly competitive vibe. “You’ll be able to feel whether or not the gym's energy works for you within one or two visits. Pay attention to it." 

It’s worth taking inventory of the vibe every few months, she adds. “A gym's vibe can change if there’s been an influx of new clientele, a change in management, or if your needs change, so keep checking in."

The gym uses high-pressure sales tactics

You know this game when you see it: You feel like you can't do a single bicep curl without a personal trainer trying to convince you to invest in some one-on-one training. “You don’t want to go to a gym where you feel like every time you walk in the door the trainers are trying to measure your BMI, talk to you about weight loss, or push their training on you,” says Luciani. For one, it’s annoying. But for another, it can create a body-negative, unsupportive environment. And if you don’t feel supported, you're more likely to skip your workout.

You've plateaued

If you’re a member of a gym or a boutique studio that only offers one type of workout and you’ve plateaued, you may actually need to switch up your fitness routine. “Ask yourself, 'Are these classes getting progressively more challenging? Am I getting stronger or better?'” says Luciani. If the answer is no, you might be doing yourself a disservice. “Your body will adapt to the fitness routine that you’re doing. You don't want your body to get too efficient. If you adapt, you plateau,” she says. The solution: Add something new to your routine at a new gym–or at least do something different a few days a week like getting outside, going on a run, or trying yoga, she says.

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As a health writer, people often ask me if I've changed my lifestyle to become a healthier person. Do I eat healthier, work out more, and actually put to use any of those nifty tips I learn about every day?

For a long time, my response was, "No—I still have all the same bad habits; now I just feel guiltier about them."

I did eventually get involved in fitness and running, partially thanks to my job. But I still find it hard to squeeze in a workout most days, even though I know how important it is to my long-term health.

Turns out, I'm probably not the only health-related professional who feels that way. Most doctors, who know the dangers of inactivity more than anyone, don't get enough exercise, according to a study published this month in the British Journal of Sports Medicine.

Almost 80% of doctors fall short
Researchers at the United Kingdom's Bedford Hospital NHS Trust surveyed 61 hospital physicians and found that only 21% get the recommended 30 minutes of moderate exercise at least five days a week—that's less than half of the 44% of the overall population in the same age group who claim to meet this goal.

Those who didn't blamed lack of time, lack of motivation, or lack of workout facilities. (Doctors with an on-site gym at their hospital didn't fare any better than those without, however. In fact, a third of them didn't even know it existed!)

Other good habits had seemed to rub off on the junior doctors, who had an average age of 27 and an average BMI of 23.5 (considered normal weight): They weighed less and smoked less than the national average, and only 7% drank more than the recommended weekly amount of alcohol. As for their abysmal exercise habits, many had been more active in school—and had only become couch potatoes after they started their jobs.

What does it mean for us?
While the study was done on British hospital doctors (as opposed to, say, American primary-care physicians), coauthor Lampson Fan, MBBS, is willing to bet that findings would be similar elsewhere.

"In both the U.K. and U.S., doctors are under the influence of the same stresses," he wrote me in an email. "In many ways, its probably worse in the U.S. as the doctors there are working on average 30 hours more [a week] than those in the U.K."

While I can't say I'm shocked at these results, the numbers are quite disheartening. If doctors, whose responsibility it should be to promote good health, can't find time to exercise, what hope is there for others out there with demanding schedules—lawyers, truck drivers, working moms, or people who have taken on a second job?

Previous research has shown that doctors who exercise are more likely to counsel their patients to do the same, and that patients are more willing to try exercising when their doctors disclose their own personal workout habits. Think about it: If an out-of-shape doctor pleaded with you to get more exercise, how seriously could you take him knowing that he's not getting enough himself?

Dr. Lampson recommends that health-care institutions do more to promote physical activity among employees, such as sponsoring organized exercise classes, team sports, and discounts with local gyms. If doctors can get passionate about exercise, hopefully they'll pass on that excitement to their patients—or at least set a good example.

Does the physical fitness of your doctor matter to you? Have you ever been motivated—or discouraged—by the health of a physician?