For the medieval king of Denmark, see Harald Bluetooth. Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs).
Stomach Muscle (Abdominal) Strain. Pulled stomach muscle is also called as abdominal muscle strain. This occurs when there is overstretching in one of the abdominal muscles such as the rectus abdominis, internal and external oblique. Most abdominal strains affect the rectus abdominis muscle; the muscle that runs down from the ribs to the pelvis in the middle of the abdomen. Abdominal strain can immediately cause pain to the area of the injured muscle.
Primary Muscles. The primary muscles the plank works are the erector spinae, the rectus abdomimus and the transverse abdominus. The erector spinae is a large muscle that runs up the length of the back. It surrounds your spine and allows you to straighten your back and rotate side to side.he plank is one of the simplest and most effective abdominal exercises. In its most basic form, you brace yourself at the top of a pushup while contracting your core muscles. You can do multiple variations of the plank to create more challenge and target different parts of the core.