What is a common sign of physical stress?

A common sign of physical stress is insomnia. Physical stress can lead to difficulty in achieving restful sleep due to the body's heightened state of alertness or anxiety. When an individual is experiencing stress, their body produces hormones like adrenaline and cortisol, which can interfere with the ability to fall asleep or maintain a deep sleep. This disruption in sleep patterns is a clear indicator that the body is under stress.

Insomnia can manifest in various ways, such as trouble falling asleep, frequent waking during the night, or waking up too early and not being able to go back to sleep. This lack of quality sleep can further exacerbate feelings of stress, leading to a cycle that can negatively impact overall health and well-being.

While other options may describe effects related to emotional or psychological stress, they do not directly indicate physical stress as clearly as insomnia does. For instance, low morale and difficulty concentrating can often stem from mental or emotional factors rather than physical ones.