Lack of sleep, hydration, and proper nutrition could do this. Many people will feel sluggish and their muscles may feel heavy causes them to feel weaker or lazy. Hydration and nutrtion are equally important because simply, if the muscles do not have necessary energy to move, you may experience muscle fatigue. That's why all of the above are important.
Dystrophy
DYSTROPHY
Muscular dystrophy
muscular dystrophy
Muscular dystrophies are a group of genetic muscle disorders that cause progressive weakness and degeneration of the skeletal muscles without affecting the nervous system. Duchenne muscular dystrophy is an example of a muscular dystrophy that fits this description.
Myasthenia gravis is a neuromuscular disorder involving the muscles and the nerves that control them.
Smooth & cardiac muscle.
If the nervous system is not functioning properly, it can lead to issues with muscle control, coordination, and movement. This can result in muscle weakness, spasms, or tremors due to improper signaling between the nerves and muscles. Overall, a malfunctioning nervous system can impair the communication between the brain and muscles, affecting their ability to work together efficiently.
cardiac muscle tissue
Adrenoleukodystrophy (ALD) affects the myelin of the central nervous system. Symptoms can vary a great deal making diagnosis difficult but include weakness of muscle tone, aphasia, strabismus, hearing loss and worsening muscle weakness and leg stiffness.
Cardiac muscle. Unlike skeletal and smooth muscle, the contraction of cardiac muscle is involuntary and requires stimulation from the nervous system. This ensures that the contractions of the heart are synchronized and coordinated.
Polio primarily affects the nervous system, specifically the spinal cord, leading to paralysis in severe cases. The poliovirus primarily targets the motor neurons responsible for controlling muscle movement, resulting in muscle weakness or paralysis.