You already know sitting all day is bad for you -- let one of these under-desk ellipticals help

You already know sitting all day is bad for you  --  let one of these under-desk ellipticals help
Source: NBC News

Under-desk ellipticals are compact, mostly quiet and make it easy to add a little movement into your work day.

If you spend a majority of your day sitting at a desk, finding ways to incorporate some movement is important. A number of studies have shown that prolonged sedentary behavior increases your risk for a number of health issues, including cardiac problems, diabetes and even cancer. The good news: You can easily add movement into your day with an under-desk elliptical.

As its name suggests, this compact machine fits nicely under a desk and has pedals that you can push while typing. They can also complement other physical activities you do throughout the day, says Bryan Wright, a physical therapist and owner of Wright Physical Therapy in Idaho.

To help you shop, I asked fitness experts about what to look for in an under-desk elliptical and got their recommendations for the best ones to buy.

I interviewed fitness pros about what to keep top of mind when shopping for an under-desk elliptical. Below is what they say to focus on:

To select the best under-desk ellipticals, I used expert advice to gather highly rated options.

Cubii is one of the top brands for under-desk ellipticals because of its ergonomic design, says Wright. This version has a built-in LCD display, which shows your calories burned, distance traveled, rotations per minute and other metrics. Eight resistance levels help you vary your workouts, and Cubii also has various at-home workout videos led by personal trainers on its Facebook page.

"I prefer sleeker models because they tend to be easier to store," says Karisa Karmali, a personal trainer and founder of Self-Love and Fitness.

This option has a smaller footprint than most of the other models on this list: The elliptical can fit under desks as low as 24 inches, according to the brand. It also has a quiet flywheel and eight intensity levels, ranging from warm-up to intense intervals.

Though this is one of the larger models on our list, it has eight resistance levels to personalize your workout and an LCD screen to keep track of your health and workout metrics, according to the brand. It has non-slip pedals plus the magnetic belt runs quietly so it won't distract you or others. The under-desk elliptical is also highly rated with a 4.4-star average rating from over 13,200 reviews on Amazon.

Unlike other models on this list, you can use this elliptical while sitting or standing. You can also pedal forward and backward, which can help you target different muscles. The LCD screen lets you monitor your strides per minute, exercise time and calories burned, too.

This Ancheer seated elliptical has a remote control to adjust settings instead of the traditional resistance knob, so you don't have to reach under your desk to adjust it. You can also use it when it's unplugged or plugged in, making it more portable than other options on the market. Like the other options on our list, the pedal positions are textured to add grip, and the machine tracks time, speed, calories and distance.

At under $60, this is the most affordable under-desk elliptical on the list. It has 12 speed levels and you can peddle both forward and in reverse. You can control the settings manually or using the included remote. The rubber treads on the bottom keep it in place, according to the brand.

At NBC Select, we work with experts with specialized knowledge and authority based on relevant training and experience. We also ensure all expert advice and recommendations are made independently and without undisclosed financial conflicts of interest.

I'm a contributor at NBC Select and a journalist who regularly covers beauty, home and lifestyle. For this story, I interviewed two fitness experts about the benefits of under-desk ellipticals and how to shop for one.