The “plank” is a great isometric exercise for the upper and lower body. This exercise has recently become quite popular. In yoga, it is called Kumbhakasana (koom-bahk-AHS-uh-nuh), or plank pose. The plank is an amazing exercise for your back, chest, shoulders, neck, abs, and quads. Strengthening these upper body muscles also aide in improving posture.
1. Start on your hands and knees, or elbows and knees, if you have any issues with your wrists.
2. Push one leg back, and rest your toes on the ground, and do the same for the other. Your body should be in one straight line.
3. Legs should be strong, straight, and engaged in the plank.
4. It is very important that the rectus abdominus and the transverse abdominus (your core muscles) are engaged and contracted throughout the time that the plank is held.