You may not experience any negative effects by exceeding your target heart rate every once in a while for short durations. However, continually exceeding your target heart rate may lead to overtraining. Overtraining syndrome commonly occurs in athletes or fitness enthusiasts who are training beyond the body’s ability to recover. When an individual is performing excessive amounts of exercise without proper rest and recovery, there may be some harmful side effects. Some of these side effects may include decreased performance, fatigue, altered hormonal states, poor sleeping patterns, reproductive disorders, decreased immunity, loss of appetite, and mood disturbances.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.