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The simple answer for why this trembling occurs and is it normal is muscle fatigue. Muscular Fatigue is the state when our muscles grow tired. The reason for this trembling is due to the fact that when muscular fatigue occurs, some of the motor units stop functioning for a time. The pressure is then put on the working units. As the remaining motor units begin to work in tandem, they give rise to sudden jerky movements, which we feel as trembling.
Have you ever been lifting something really heavy when your arms suddenly start to tremble? Or when you’re at the gym, finishing your last set of leg presses, have your legs ever begun to quiver? Some people even consider this trembling as a sign of whether you’ve pushed your muscles to their maximum capacity. The question is, why does this trembling occur and is it normal? Or is it something to be worried about?
The simple answer for why this reaction by the body occurs is muscle fatigue.
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Muscular Fatigue
As the term suggests, muscle fatigue is simply the state when our muscles grow tired. To understand this phenomenon, it is better to first understand what happens to our muscles when we exercise or lift weights. As you likely know, the signal for the muscle to move comes from the spinal cord, through the neurons and down to our muscles. Each neuron connects to a number of muscle cells, rather than a single muscle cell. The neuron, along with the muscle cells to which it is connected, is known as a motor unit.
Our body almost always informs us whenever something is not right. Excessive stress and pressure on the muscles can lead to long-term damage, which is why it is so important to understand the signs of the body and pay attention to them, rather than ignore them. If something feels wrong, it’s always advisable to cease the behavior causing the discomfort, go to a doctor or seek some other form of professional help.
