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Callum Parker
November 30, 2025

Ranking the Best Fitness Trackers to Help You Get Fit This Year

Discover the best fitness trackers to help you get fit this year and learn how pairing them with DEXA Scan data gives you the most accurate view of your progress.

Author
5 min read
Ranking the Best Fitness Trackers to Help You Get Fit This Year

Fitness trackers have become one of the most powerful tools for improving health, accountability, and daily activity. But not all trackers are equal. Some focus on steps, others on recovery, heart rate variability, or overall readiness. The right choice depends on your goals and the type of insights you want to monitor.

At Kalos, we encourage clients to use fitness trackers alongside DEXA Scan body composition data. Wearables help you track daily habits, while DEXA provides the deeper internal data that shows whether those habits are truly improving your muscle, fat, and metabolic health.

Here is the definitive ranking of the best fitness trackers to help you get fit this year.

1. Whoop 5.0 or 4.0

Best for: Recovery, sleep, and long term performance

Whoop is one of the best devices for people who want to understand their body on a deeper physiological level.

Key features:

  • Tracks recovery using HRV, resting heart rate, and sleep strain
  • Measures strain to guide daily readiness
  • No screen so you focus on your habits rather than notifications
  • Detailed sleep analysis with actionable feedback

Why it helps you get fit:

Whoop helps prevent overtraining by showing when your body needs rest. Many Kalos clients pair Whoop data with DEXA scans to ensure training loads are supporting muscle retention and fat loss.

2. Apple Watch Series (Latest)

Best for: All round fitness, convenience, and lifestyle use

The Apple Watch is one of the most user friendly trackers and works well for people who want everything in one device.

Key features:

  • Accurate heart rate monitoring
  • Activity rings that encourage daily movement
  • Built in GPS for walking, running, and cycling
  • Integrates with countless fitness apps

Why it helps you get fit:

Perfect for tracking workouts, overall activity, and calories while also helping you stay consistent with daily movement. When matched with DEXA data, it becomes an excellent habit building tool.

3. Oura Ring Gen 3

Best for: Sleep tracking and readiness

The Oura Ring is ideal for people who want high precision sleep and recovery data without wearing a watch.

Key features:

  • Elite sleep tracking accuracy
  • HRV and readiness scoring
  • Temperature tracking
  • Lightweight and easy to wear

Why it helps you get fit:

Better sleep leads to better fat loss, recovery, and muscle growth. Oura helps identify sleep quality issues that may be holding back your body composition goals.

4. Garmin Forerunner / Fenix Series

Best for: Runners, endurance athletes, and outdoor training

Garmin is the gold standard for serious runners and endurance athletes.

Key features:

  • Extremely accurate GPS
  • Advanced metrics like VO2 max, training load, and lactate threshold
  • Long battery life
  • Outdoor durability

Why it helps you get fit:

If your training involves running, hiking, cycling, or triathlon work, Garmin provides the most detailed and reliable performance metrics.

5. Fitbit Charge 6 or Versa 4

Best for: Beginners and general health tracking

Fitbit has always been the most beginner friendly fitness tracker.

Key features:

  • Simple step and activity tracking
  • Reliable sleep analysis
  • Long battery life
  • Affordable price point

Why it helps you get fit:

Perfect for people starting a fitness journey who want to increase daily movement and build healthier habits before moving to more advanced wearables.

6. Polar Ignite 3

Best for: Heart rate training and structured workouts

Polar devices are highly respected for heart rate accuracy.

Key features:

  • Excellent HR monitoring
  • Guided workouts based on readiness
  • Great for Zone 2 cardio training

Why it helps you get fit:

Ideal for people focused on heart rate based training, especially those aiming to improve endurance and fat burning efficiency.

How Fitness Trackers Help Fat Loss and Muscle Gain

Fitness trackers help you:

  • Increase daily steps
  • Improve NEAT
  • Track calories burned
  • Monitor heart rate zones
  • Stay consistent with habits
  • Improve sleep and recovery
  • Avoid overtraining
  • Stay accountable

When paired with DEXA Scan results, you get a complete picture of your progress.

The wearable shows what you are doing each day, and DEXA shows whether those habits are actually improving your fat, muscle, and metabolic health.

The Best Tracker Depends on Your Goal

Choose based on what matters most to you:

  • Fat loss: Apple Watch, Fitbit, Garmin
  • Muscle building: Whoop, Oura, Apple Watch
  • Longevity: Oura, Whoop
  • Cardio improvement: Garmin, Polar
  • Beginner friendly: Fitbit
  • Deep health tracking: Whoop, Oura

Real World Example

A Kalos client struggling with energy and fat loss switched from guessing their training load to using Whoop to track recovery. Combined with monthly DEXA scans, they adjusted their strength training and sleep schedule. After 10 weeks:

  • 5.6 lbs fat lost
  • Lean mass maintained
  • Better sleep consistency
  • Higher workout performance

The combination of a wearable and accurate body composition testing created measurable improvements.

The Bottom Line

The best fitness tracker is the one that supports your lifestyle and your goals. Whether you want better recovery, more daily movement, or improved cardio performance, a modern wearable can guide your progress and hold you accountable.

Pairing your fitness tracker with DEXA Scan data from Kalos ensures you are improving the numbers that truly matter: fat mass, lean mass, visceral fat, and metabolic health.

Book Your DEXA Scan with Kalos Today in Downtown San Francisco or Palo Alto!

If you are ready to take control of your health with the most accurate body composition analysis available, it is time to book your DEXA scan at Kalos. Whether you are looking to get lean, build muscle, improve performance, or optimize longevity, our advanced technology and expert guidance will help you get there.

Schedule your scan today at Kalos, your journey to data-driven fitness starts now.

Schedule your DEXA scan today!

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