Tests are not normally needed for someone who has sleep related groaning. Your doctor may have you do an overnight sleep study if your problem is severely disturbing your sleep. This study is called a polysomnogram. It charts your brain waves, heart beat, and breathing as you sleep.
A gingham shirt is a menswear classic and this Gentlemans Corner Felix shirt is no exception. This classic button down style has a slim fit in the upper body with a more generous cut around the stomach.
A shirt is a cloth garment for the upper body (from the neck to the waist). Originally an undergarment worn exclusively by men, it has become, in American English, a catch-all term for a broad variety of upper-body garments and undergarments.