Atrophy
Atrophy.
When electricity passes through your muscles, it disrupts the normal flow of signals from your brain to your muscles, causing them to contract involuntarily. This phenomenon is known as electrical muscle stimulation and is commonly used in physical therapy and fitness training to help strengthen muscles and improve circulation.
Between 640 and 850 muscles in a normal human's body.
When you squeeze your muscles really hard (like in a stunt) your muscles may shake because they're working so hard. It's totally normal, it happens to everyone.
Normal nipple sensation is when it is stimulated then it will erect and constant stimulation makes the uterus contract.
You should try to keep calm and relax, your body will return to normal. If not consult a physician, they will give you an injection to relax your muscles.
If you exercise a lot, it should be totally normal to have larger muscles.
Pre-ejaculation, whenever it occurs, is a normal thing. It can never really be abnormal, unless it is spontaneous and there is no sexual stimulation going on at the time. Kissing is definitely sexual stimulation and can cause pre-ejaculation.
intercostal muscles
Yes, it is normal for cats to drool while sleeping. This can happen when they are in a deep state of relaxation and their muscles are completely relaxed. It is usually nothing to worry about unless it happens frequently or is accompanied by other symptoms.
All the synovial joints that are used in normal daily activities, like the muscles and joints of the arms and legs.
A "strained"muscle is one that has been used more than normal, and is a voluntary muscle. Involuntary muscles are those that work without your having to think about it (heart for example) and are very difficult to "strain." Muscles that move when you choseto use them ( arms, legs) are more likely to suffer stress injuries.