This pose promises improvement in levels of strength and stability to the physical body and endurance to the mind.For many, though, this asana presents challenges and sometimes causes discomfort.
This position features in the classic sun salutation as well as in dynamic vinyasas in flow classes. So we practice this quite often, do take care to maintain the integrity of the pose to avoid injury.
When starting out,place the knees on the floor. Gradually work towards the full pose. Be gentle to yourself.
If you are quite comfortable with the plank pose , some variations such as side plank or vishwamitrasana might be appropriate to advance your practice.
If you have weak wrists, modify this pose by placing the forearms on the floor.
Enjoy your practice!