Target Heart Rate and Cardio Monitoring for Safe Workouts

Maintaining a healthy resting heart rate is a key indicator of cardiovascular health, especially during high-intensity HIIT or IVF. Learn how to lower your heart rate while running and evaluate the accuracy of calories burned on heart rate monitors.

A Heart Rate During a Heart Attack

Published Jul,08 2011 | By Bryan Fass

The Merck Manuals, an online library of medical information, says, "Acute coronary syndromes result from a sudden blockage in a coronary artery. This blockage causes unstable angina or heart attack, or myocardial infarction, depending on the location and amount of blockage."

Bryan Fass began writing in 2003. His column appears on EMS1.com, Officer.com and he has numerous books on fitness, wellness, injury prevention and human performance, including "The Fit Responder" and "On the Road to Feeling Great." He is a certified/licensed athletic trainer, strength and conditioning specialist, paramedic, speaker and consultant. He holds a Bachelor of Arts in sports medicine from Catawba College.