A muscle shirt is a style of sleeveless T-shirt that clings tightly to the body. These shirts are popular among men because they help to showcase their muscles. Muscle shirts were first popular in the 1980s.

Originally, they were designed to be tight and sleeveless. This was to help show off the pectoral muscles, biceps and triceps. However, they are now available in a variety of materials.

When you are looking for a muscle shirt, you should consider your size and the material that it is made of. Depending on the purpose for the shirt, you should choose a material that is breathable and moisture-wicking.

The armholes of a muscle fit shirt should be cut closer into the armpit, so that the sleeves follow the shape of the arms without excess fabric sagging around them. This is because the muscles in the arms can be very large and difficult to accommodate in a close fitting shirt.

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It is also a good idea to check the sleeve seams. Usually, the sleeve seams should be close to the top of the shoulder so that the shirt does not feel too big or too tight.

If you are going to be wearing your shirt in the gym, it is a good idea to look for a material that is more durable than the standard cotton that is used for most tank tops. This is because the fabric will need to be able to withstand the heat of a workout.