The supine bird is practicing the chest groove, that is, squeezing two chest muscles into a seam. Think about it. Isn't it cool?

A bird that leans upward exercises the upper muscles of the pectoral muscles, that is, the parts connected with the shoulders and collarbone. Wearing a coat looks very stylish from the side.

Of course, it would be perfect if the lower part could be built, but it is very difficult, because the premise is that the pectoral muscles are thick enough.

Let's go