The fitness wearables market has taken off in the past few years, and fitness tech products were all the rage at this month's CES 2015. The wearable technology market will continue to grow, but are consumers jumping on the bandwagon?

Over the years, activity trackers have evolved from simple heart rate monitors and pedometers to now tracking mileage, physical activity, calorie intake, heart rate, sleep quality, body temperature, stress level and more. Fitness wearables provide a plethora of data to help consumers improve their personal health and wellness.

This begs the question: Are fitness wearables a must-have? Here are four reasons to dive in to the fitness wearables market.

1. Prevent heart disease

What's the benefit in tracking your heart rate? Monitoring your heart rate can be useful when you are working out. How much is too much for your heart? What's not enough to have a quality work out and maintain a healthy heart?

There's a range of where your target heart rate should be when you are getting active. This is a quick way to know if you should ramp up or slow down your aerobic activity. Here is an excellent guide to where your heart rate should be during physical activity from the Centers for Disease Control and Prevention (CDC).

According to the CDC, heart disease is the leading cause of death in the United States. It's beneficial to monitor your heart rate daily to know if there is room for improvement or if you are at risk for heart disease.

2. Motivate an active lifestyle

I know what you're thinking: Sitting on the couch with pizza and beer sounds much better than "being active," but football season is coming to a close and what better time than the New Year to get moving. A new study published in Annals of Internal Medicine found that too much sitting, even if you regularly work out, raises risk of disease and death.

Exercise is the best medicine for overall health. By monitoring your physical activity, you can set personal goals and improve your health and fitness. It may even motivate you to be more active.

3. Encourage sticking to a nutrition plan

When it comes to maintaining a nutritious meal plan and healthy lifestyle, calories are a huge factor. The CDC says, "weight management is all about balance — balancing the number of calories you consume with the number of calories your body uses or burns off."

By tracking both your calories and your physical activity, you can see if you are on track with your goals. Find out how many calories you should be consuming here.

4. Test before you invest

You have plenty of reasons to jump on the fitness tracking bandwagon now, but where do you start? The options are endless, whether you are looking for something simple and affordable or over-the-top and a little pricey.

Can't decide? Check out, where you can pick out five wearables to try out for a week. Garmin, Nike Fuelband, Misfits and Fitbits all available for your rental and, if it works out, purchasing needs.

Fitness tracking is the future of preventative healthcare. CEA Industry Forecast projects sales of wearables to reach more than $400 million in 2015. Is this your year to get on track?