1. What is Zone 2 Cycling?

Zone 2 cycling refers to exercising at 55-75% of your Functional Threshold Power (FTP). This is an aerobic endurance zone that improves fat metabolism and aerobic capacity while allowing for recovery.

2. How Does the Calculator Work?

The calculator uses the Zone 2 formula:

Where:

• \( FTP \) — Functional Threshold Power in watts
• \( 0.55 \) — Lower bound coefficient
• \( 0.75 \) — Upper bound coefficient

Explanation: The formula calculates your aerobic endurance training zone based on your FTP, which is the highest power you can sustain for one hour.

3. Importance of Zone 2 Training

Details: Zone 2 training builds aerobic base, improves mitochondrial function, enhances fat metabolism, and allows for recovery while maintaining fitness.

4. Using the Calculator

Tips: Enter your current FTP in watts. The calculator will output your Zone 2 power range for endurance training.

5. Frequently Asked Questions (FAQ)

Q1: How often should I do Zone 2 training?
A: Most cyclists benefit from 2-4 Zone 2 sessions per week, depending on training goals and season.

Q2: How do I determine my FTP?
A: FTP is typically measured via a 20-minute test (95% of your 20-minute max power) or a 1-hour all-out effort.

Q3: Can I talk while in Zone 2?
A: Yes, Zone 2 should allow for conversation ("talk test") with slightly labored breathing.

Q4: Is Zone 2 the same for everyone?
A: While calculated similarly, individual variations in physiology mean perceived effort may differ slightly.

Q5: Should I use power or heart rate for Zone 2?
A: Power is more precise, but heart rate can be used if power data isn't available (account for HR drift).