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Person wearing a Polar H9 Heart Rate Sensor

Photo:Shape / Christine DiGangi

The best heart rate monitors allow you to accurately track yourtraining zonesduring workouts without restricting movement.

Over time, youll also be able to see what your aerobic system is getting out of it.

We analyzed each for accuracy, comfort, connectivity, battery life, features, and ease of use.

POLAR H10 Heart Rate Monitor

PHOTO: Amazon

It can actually measure a single lead electrocardiogram and waveform of your heart, says Dr. Chokshi.

Theres nothing to toggle, no buttons to press and the battery is already charged.

As our tester said, Just drop some water on it and magic!

Person holding a POLAR H10 Heart Rate Sensor

PHOTO: Shape / Lauren Coughlin

With no monitor or additional features, its beauty lies in its simplicity.

The band stayed tight to our chest, causing no chafing or irritation.

Its designed to offer accurate data no matter your skin color which cant be said of all armbands.

Close up of person wearing a POLAR H10 Heart Rate Sensor

Darker skin tones sometimes have less accurate reads, says Dr. Chokshi.

While youre working out, the lights on the equipment tell you which heart rate zone youre in.

The monitor can also track your distance, time, and pace.

Person holding a POLAR H10 Heart Rate Sensor

That means theres no strap to fuss with or feel restricted by.

The best heart rate monitor is the one youre going to use the most, says Dr. Chokshi.

The connected app even offers classes and the ability to connect with other MyZone members.

Close up of person wearing a POLAR H10 Heart Rate Sensor

We found the fabric breathable and the Velcro easy to adjust.

Although we wouldnt mind if the material were more sweat-wicking it sometimes took a while to dry out post-workout.

It turns on automatically when you strap it on and powers down as soon as you slip it off.

Amazon AliveCor KardiaMobile 1-Lead Personal EKG Monitor

PHOTO: Amazon

However, adjusting the band to get a secure fit sometimes took a few minutes.

Each charge lasted about three days before we had to plug in the USB cord.

But we found it did so exceptionally well with accurate results.

Persons hands on an AliveCor KardiaMobile 1-Lead Personal EKG Monitor

PHOTO: Shape / Mike Navarro

There are five zones, ranging from active recovery to maximum effort.

The ones that have been around, they’re fairly accurate for the most part, he says.

Close up of an AliveCor KardiaMobile 1-Lead Personal EKG Monitor

Persons hands on an AliveCor KardiaMobile 1-Lead Personal EKG Monitor

Close up of an AliveCor KardiaMobile 1-Lead Personal EKG Monitor

Garmin HRM-Pro Plus

PHOTO: Garmin

Scosche Rhythm 24 Waterproof/Dustproof Fitness Armband with Built-in Memory, Dual Band ANT+ and BLE Bluetooth Smart, Hyper Accurate Tracking of Your Heart…

PHOTO: Amazon

Person wearing a Scosche Rhythm24 Waterproof Armband Heart Rate Monitor

PHOTO: Shape / Michal Hanover

Scosche Rhythm24 Waterproof Armband Heart Rate Monitor in its original box

Close up of person wearing a Scosche Rhythm24 Waterproof Armband Heart Rate Monitor

Person wearing a Scosche Rhythm24 Waterproof Armband Heart Rate Monitor

Scosche Rhythm24 Waterproof Armband Heart Rate Monitor in its original box

Close up of person wearing a Scosche Rhythm24 Waterproof Armband Heart Rate Monitor

Amazon Polar H9 Heart Rate Sensor

PHOTO: Amazon

Close up of person putting on a Polar H9 Heart Rate Sensor

PHOTO: Shape / Christine DiGangi

Person wearing a Polar H9 Heart Rate Sensor

The original packaging to a Polar H9 Heart Rate Sensor

Close up of person putting on a Polar H9 Heart Rate Sensor

Person wearing a Polar H9 Heart Rate Sensor

The original packaging to a Polar H9 Heart Rate Sensor

Garmin HRM-Fit

PHOTO: Garmin

MyZone MZ-Switch Heart Rate Monitor

PHOTO: MyZone

A MyZone MZ-Switch Heart Rate Monitor in its original packaging

Shape / Stella Yu

Wahoo Fitness Tickr Fit Heart Rate Monitor Armband

PHOTO: Amazon

Person wearing a Wahoo Fitness Tickr Fit Heart Rate Monitor Armband

PHOTO: Shape / Claire Bugos

All of the parts to a Wahoo Fitness Tickr Fit Heart Rate Monitor Armband

Person wearing a Wahoo Fitness Tickr Fit Heart Rate Monitor Armband

Person wearing a Wahoo Fitness Tickr Fit Heart Rate Monitor Armband

All of the parts to a Wahoo Fitness Tickr Fit Heart Rate Monitor Armband

Person wearing a Wahoo Fitness Tickr Fit Heart Rate Monitor Armband

Amazon Coros Heart Rate Monitor

PHOTO: Amazon

A Coros Heart Rate Monitor on a person’s arm

PHOTO: Shape / Chantia Murphy

The packaging to a Coros Heart Rate Monitor

Close up of a Coros Heart Rate Monitor on a person’s arm

A Coros Heart Rate Monitor on a person’s arm

The packaging to a Coros Heart Rate Monitor

Close up of a Coros Heart Rate Monitor on a person’s arm

Garmin HRM-Swim

PHOTO: Garmin

Close up of a Garmin HRM-Swim with its instructions

PHOTO: Shape / Riddley Schirm

Close up of a Garmin HRM-Swim heart rate monitor

Close up of a Garmin HRM-Swim with its instructions

Close up of a Garmin HRM-Swim heart rate monitor

COOSPO REALZONE H9Z Rechargeable Chest Heart Rate Monitor

PHOTO: COOSPO

Amazon POWR LABS Heart Rate Monitor Chest Strap

PHOTO: Amazon