Zone 2: Heart Rate Training app for iPhone and iPad

Zone 2 helps you track how much of your weekly workout time is performed in the zone 2 heart rate range. It is recommended that 80% of your workout time is spent in this zone. 

Use it with any fitness tracker that writes heart rate data to the Health app on your iPhone or use the Zone 2 Apple Watch app for real-time zone tracking during workouts!
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What is Zone 2 heart rate training?

Zone 2 training refers to exercise performed at a moderate intensity that keeps your heart rate in a specific heart rate zone, typically between 60-70% of your maximum heart rate. This is the heart rate zone where your body is able to utilize oxygen most efficiently, which can lead to a range of benefits for your fitness and health.

Zone 2 training is important for a number of reasons, including:

• Improved aerobic capacity: By training in the zone 2 heart rate range, your body becomes more efficient at using oxygen to produce energy, which can improve your overall aerobic capacity.
• Increased fat burning: During moderate-intensity exercise, your body relies more on fat as a source of fuel, which can help to improve your body composition and reduce body fat.
• Improved cardiovascular health: Regular exercise in the zone 2 heart rate range can help to strengthen your heart and improve blood flow, which can reduce the risk of heart disease.
• Increased endurance: Training at a moderate intensity can help to improve your endurance and stamina, which can be particularly helpful for endurance athletes such as long-distance runners or cyclists.

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