Individuals can monitor their heart rate during workouts using devices like heart rate monitors, fitness trackers, or smartwatches. These tools provide real-time data on heart rate, helping users maintain target training zones for optimal performance. Manual methods, such as checking pulse at the wrist or neck, can also be effective. Monitoring heart rate assists in adjusting exercise intensity, maximizing aerobic capacity, and ensuring safe training, especially for those with specific health conditions or fitness goals.