Stretching of the back muscles sitting on a chair

Stretching back muscles sitting on a chair — technique exercises:

1. Sit on a chair. Back straight, feet parallel to each other on the floor.
2. Interlace the fingers at the nape. Chin down, elbows in the parties.
3. Turn upper torso to the side, trying to reach the knee elbow from the opposite side.
4. Return to starting position, repeat tilt in the other direction.