What should a 27 year old males heart rate be during intervals?

Target Heart Rate Zones

| Age | Maximum Heart Rate (beats per minute) | Target Heart Rate Zone (beats per minute) |

|---|---|---|

| 25-29 | 195 | 146-175 |

| 30-34 | 190 | 142-170 |

| 35-39 | 185 | 137-163 |

| 40-44 | 180 | 132-158 |

During intervals, your heart rate should be in the target heart rate zone for your age. This zone is between 60% and 85% of your maximum heart rate. To calculate your maximum heart rate, subtract your age from 220. For example, if you are 27 years old, your maximum heart rate would be 193 beats per minute. Your target heart rate zone would be between 116-164 beats per minute.