Fanning is a gliding technique that's done in the direction and the length of the muscle.

Imagine you have a straight line. Move your thumbs alternately over the line in a semi-circular motion like a shape of a fan.

Let's practice on a body. I'm going to massage Rhomboids between the spine and the shoulder blade.

Draw imaginary lines in the direction of the muscles.

Use a tiny bit of lubricant and warm up in your hands.

Do the fanning with your thumbs from right next to the spine to the inner edge of the shoulder blade.

The key is to move the entire hands from your torso to move your thumbs. Don't just use your thumbs because it will kill your thumbs.

Try to keep the angle between the thumb and index finger. Keep your arms straight so you can use your body weight for pressure and not depend on your thumb strength.

Repeat on the other side.

If your thumbs get tired or sore, stop immediately. It's just not worth to hurt yourself to try to give a good massage.