Cardiovascular Training
Understanding Heart Rate Zones
Train smarter by matching your heart rate to your exact goals.
Cardiovascular training is divided into 5 physiological zones based on maximum heart rate.
Train smarter by matching your heart rate to your exact goals.
Cardiovascular training is divided into 5 physiological zones based on maximum heart rate.
Known as the "conversational pace" zone. You can talk in full sentences without gasping.
Builds mitochondrial density, improves fat oxidation efficiency, and trains your heart muscle.
Elite endurance athletes spend 80% of their training time in Zone 2.
Zone 4 (80–90%): Lactate threshold. Breathing is labored.
Zone 5 (90–100%): All-out sprint efforts. Increases VO2 max and anaerobic speed.
Limit high-intensity Zone 5 work to 1–2 sessions per week to prevent overtraining.
Use our Target Heart Rate Calculator (Karvonen & Tanaka formulas) to find your beats per minute for each zone.
Educational tool only. Does not replace individualized clinical diagnosis.