Fitness trackers come in all shapes and sizes these days, from incredibly smartwatches to colorful wristbands. And while some are super stylish and have the ability to track things like your steps and sleep patterns, you may grow bored with them, realizing that they’re not actually helping you achieve your fitness goals and are just another accessory taking up space at your arm party. Is there more to fitness monitoring than just a cool case and some calorie stats? The answer is yes, and it comes in the form of the BSX Insight.

Now raising funds on Kickstarter, BSX Insight is an innovative all-in-one wearable fitness monitor that can track your heart rate, cadence, pace, calories burned and, for the first time ever, your lactate threshold. We know what you’re thinking: 1. Awesome! 2. Um, what’s lactate threshold?

Unless you’re a professional athlete or a doctor, you’ve probably never heard of it. But this is how BSX sets itself apart from the Jawbones, Fitbits and FuelBands of the world.

Allow us to explain: Every time you use your muscles, your body produces lactate. During intense exercise, your body produces so much of it that your blood isn’t able to flush it out fast enough. This is the moment when you feel your muscles burning. Sports experts have figured out that, with proper training and monitoring, you can actually increase your lactate threshold by up to 25%, which translates to something like 40 minutes shaved off a marathoner’s personal record. To track LT, you’d typically have to get lab tests done involving blood work, which could cost up to $1,000 a year. Now, you have the BSX Insight, which not only costs a fraction of that, but is far less painful. (All in favor of cheaper painless alternatives say, “Aye!”)

The BSX Insight “looks” inside your muscles when you’re running, cycling or swimming to measure real bio signals and determine how hard your body is actually working compared with how hard it should be working. So, for those runners who cross the finish line of a 5K feeling like they could’ve gone faster or those cyclists who feel completely burned out at the end of a race, BSX Insight could be the key to helping you figure out where you went wrong and how to fix it so you can become a better athlete.

Here’s exactly how BSX Insight works: Through paired communication with your sports watch, BSX Insight lets you know, in real time, whether you should speed up, slow down or rest. By simultaneously watching your heart rate, pace, cadence, fuel reserve and LT, it can create a fitness profile and tell you what changes you need to make almost immediately.

How do you wear it? The super sleek device snaps easily into a custom compression sleeve. Using ANT+ or Bluetooth, you can connect it to your smartwatch. During your workout, it’ll give you both video and audio alerts to speed up or slow down. After, it’ll automatically sync to your computer and you can review all the important data of your workout. If you killed it, you can share it with your friends on social media. Go ahead, brag about it. You deserve it.

To be one of the first people to get your paws on the BSX Insight, all you have to do is pledge $179. That’s basically the price of one session with a personal trainer. So, you’re pretty much saving money and becoming the next [insert your favorite athlete here] with this must-have fitness monitor. We trust you’ll do the right thing.

Are you training to become better at a specific sport? Would you use BSX Insight to track your “lactate threshold?”