1. What is Heart Rate Zone?

The heart rate zone is a range that defines the intensity of your workout based on your maximum heart rate. The minimum zone (50% of max HR) represents light exercise intensity.

2. How Does the Calculator Work?

The calculator uses the simple heart rate zone formula:

Where:

• 220 — Estimated maximum heart rate constant
• age — Your age in years
• 0.5 — 50% intensity factor for minimum zone

Explanation: The formula estimates your maximum heart rate by subtracting your age from 220, then calculates 50% of that value for the minimum training zone.

3. Importance of Heart Rate Zones

Details: Training in the correct heart rate zone helps optimize workouts, improve cardiovascular fitness, and ensure safe exercise intensity.

4. Using the Calculator

Tips: Enter your age in years. The value must be valid (between 1-120). The result shows the minimum recommended heart rate for light exercise.

5. Frequently Asked Questions (FAQ)

Q1: Why use 220-age for max HR?
A: It's a simple, widely-used estimation formula, though individual variations exist. For more accuracy, consider a stress test.

Q2: What are the other heart rate zones?
A: Typically zones are: 50-60% (very light), 60-70% (light), 70-80% (moderate), 80-90% (hard), 90-100% (maximum).

Q3: When should I use this zone?
A: The 50% zone is good for warm-ups, cool-downs, and recovery days.

Q4: Are there limitations to this formula?
A: It's less accurate for very fit individuals or those on certain medications. Actual max HR can vary ±10-20 bpm.

Q5: Should I stay exactly at this heart rate?
A: It's a guideline. Listen to your body and adjust intensity based on how you feel.