Sleep disorders caused by overexertion

Overexertion is a condition in which the body is so strained that it can no longer recover normally. This can result from, for example, training too intensely without sufficient rest. Symptoms of overexertion include decreased performance, fatigue, sleep disturbances, tremors, arrhythmias, weakened immunity, depression, and anxiety.

Sleep disturbances due to overexertion can manifest in various ways. The most common symptoms are difficulty falling asleep, fragmented sleep, and waking up too early. The quality of sleep deteriorates, leading to daytime fatigue and impaired performance. Overexertion affects the nervous and hormonal systems, which play a central role in regulating sleep. When these systems are constantly overloaded, they cannot recover properly, resulting in sleep disorders.

Unfavorable Changes in the Body Due to Overexertion

The hormonal system is regulated by the hypothalamic-pituitary-adrenal axis (HPA axis), which governs the stress response and can become disrupted during overexertion. Likewise, the sympathetic nervous system, which is activated in stress situations, can remain in a constantly overloaded state under overexertion. Cortisol levels may rise and impair sleep quality.

The structure of sleep, which becomes disrupted during overexertion, is affected by a reduction in REM sleep and deep sleep. Overexertion can also disturb the circadian rhythm, and the parasympathetic nervous system — which promotes relaxation and recovery — may function poorly. Additionally, the neuroendocrine system, which coordinates interaction between the nervous and hormonal systems, becomes impaired.

Treatment of Sleep Disorders

The treatment of overexertion and related sleep disorders begins with reducing the strain and ensuring adequate rest. It is important to listen to the body and give it time to recover. If needed, it’s advisable to consult a specialist who can help design an appropriate training and recovery program.

Lähteet: Terveystalo – Ylirasitustilan hoito, Duodecim Terveyskirjasto – Ylikunto, Meeusen, R., et al. (2013),
Kreher, J. B., & Schwartz, J. B. (2012), Leeder, J., et al. (2012).

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