Muscle definition workout plan. X-rays can check for avulsion fractures, while ultrasound and MRI s can show tears in the muscles and tendons. Exercising or working hard, especially in heat, can lead to muscle cramps. It is caused by medications that build up high levels of serotonin in the body. Serotonin is a chemical that the body produces naturally. They can also build strength, but not effectively. Mar 7, 2023 · Overview A muscle cramp is a sudden, unexpected tightening of one or more muscles. Aug 22, 2025 · This causes muscle weakness. Sep 12, 2024 · Serotonin syndrome is a serious drug reaction. Isometric exercises help maintain strength. Myasthenia gravis also may happen if antibodies block proteins such as muscle-specific receptor tyrosine kinase, also called MuSK, or lipoprotein-related protein 4, also called LRP4. liol tn2ch pch3gf vyz6yype oidn dvrt d1pvv ugyc icveyh 5i