Nervous tension.
Nervous tension: "The tension from waiting for the jury to give its verdict was giving me a headache."Physical tension: "If you overtighten the guitar string, the tension will be so great the string will snap."
nervous breakdown
because the sports person or whoever is getting the tension gets nervous and start to think the worst
Fear, nervous tension, cold, muscle spasm .....
It's usually nervous tension.
Anxious, nervous tension. Then joy afterwards.
There is no direct link between feeling nervous and cracking knuckles. People may crack their knuckles when they are nervous as a habit or a way to release tension, but it is not a necessary or universal response to nervousness.
A muscle relaxant works by targeting the nervous system to reduce muscle contractions, helping to alleviate muscle tension or spasms.
The nervous system is communicating with the body every moment that you are alive. It sounds like you are refering to some kind of muscle spasm or tension.
A drug that slows nervous system activity and relaxes tension
Your mind produces dreams that express your own feelings, including deeply held emotions that you do not realize you have. Being nervous in a dream expresses your tension and anxiety about something happening in your life.