To execute purvottanasana correctly, depress the shoulders, scoop the tailbone in, engage the core and keep the hips lifted. Hold the pose for 3 to 5 breaths.
Note: Some may find it challenging to place the soles of the feet flat on the mat. In such a situation, keep the knee bent at 90 degrees instead of straight.
So, practise these core exercises regularly, it increases bone density and reduces backaches. A strong core also provides balance and stability which prevents falls and injuries. Remember, these exercises also help to burn calories, leaving you feeling and looking great!