The Actual Definition of Muscle Tone. Muscle tone, also known as muscle tonus or residual muscle tension, is an unconscious low level contraction of your muscles while they are at rest. Essentially, muscle tone is what makes your muscles still feel somewhat firm while you are resting and not intentionally tensing them.
Everyone experiences abdominal pain from time to time. Other terms used to describe abdominal pain are stomachache, tummy ache, gut ache and bellyache. Abdominal pain can be mild or severe. It may be continuous or come and go. Abdominal pain can be short-lived (acute) or occur over weeks and months (chronic).
Calling it stomach ache. The stomach (fortunately) does not ache. Usually when people say their stomach aches, they mean they have a gas pain. Gas pain can be severe pain. My friends who work in emergency rooms say you wouldn't believe how many people come in for what turns out to be gas pain.