Hot and sweaty
A muscle becomes shorter when it contracts.
When a muscle becomes shorter and thicker, it is called muscle hypertrophy. This occurs when the muscle fibers increase in size in response to repetitive, strenuous exercises like weightlifting.
relaxes
It becomes shorter.
The substance that becomes an end product of respiration in muscle cells is latic acid. This will happen commonly at the end of a strenuous exercise.
Muscle becomes shorter and thicker during contraction... so what?!!! (help me!!!)
Exercise causes your muscle cells to widen and grow so that that muscle becomes bigger and stronger.
You have rectus abdomins in the center of the abdomen. This is the muscle, which becomes prominent in case of 'six pack abs'.
A tendon, which becomes continuous with the periosteum of the bone.
Tatrophy
Contraction is the process in which a muscle becomes or is made shorter and tighter, so if a muscle is pulled, it has become shorter and tighter. Hope this helped!
The rectus abdominus muscle, which is the muscle that becomes a six-pack if you train it, is the muscle at the front of the abdominal wall and stretches across the specified region.