Instructions:
- 1Make a fist and hold it against your chin
- 2Push your chin into your fist without allowing your head to move
- 3Hold this position for 5 seconds
- 4Relax and then repeat the exercise
Tips:
- Keep your posture upright and do not lean
- Make sure your force is exerted vertically and not at an angle
- Remember to breathe normally during the exercise
- Perform the exercise slowly to avoid any strain