biceps
Muscle memory is simply the movements that one's muscle become familiar with performing. To show off muscle memory one has to repeat a movement many times before it becomes second nature. It is why people who start body building experience aches in pains in muscles they were not previously using. The new muscle memory will be shown off in the increased size of those muscles.
Gastrocnemius
He plays basketball and I think he has some little muscle to show off ;)
upper arm chest stomach calf butt
so people can show off
Some people show off their body in public because they want attention. These people are actually the people who are most self conscious usually.
show some good trapezius exercises for people who are constantly keyboarding
Sometimes people show off because they think there better than one but most of the time its because they want to show the world what there made of its not to make other people feel bad.
to show off people talent
The bicep is typically the first muscle people flex to showcase their strength. It's often associated with physical fitness and bodybuilding, making it a popular choice for display. The bicep's prominent location on the upper arm and its visual impact when flexed contribute to its popularity as a symbol of strength.
To tighten your muscle(s), usually in an attempt to flatter.flexing can also mean to show off
Well Louis is known to have the most muscle and isn't afraid to show it off to the other members of the band.