Calculate your training heart rate zones for optimal exercise intensity.
Max Heart Rate
185 bpm
Heart rate reserve: 120 bpm
Zone 1 (Recovery)
125-137
bpm
Zone 2 (Fat Burn)
137-149
bpm
Zone 3 (Aerobic)
149-161
bpm
Zone 4 (Threshold)
161-173
bpm
Zone 5 (Max)
173-185
bpm
Training in different heart rate zones develops different fitness qualities. Zone 2 builds aerobic base, Zone 3 improves endurance, and Zones 4-5 develop speed and power. The Karvonen formula used here accounts for your resting heart rate.
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