Planks are an excellent exercise to strengthen your core and stability. If you aren’t able to hold a plank, it is a signal to really work on improving your body’s strength to manage its own weight. A plank is super easy to do but harder to hold on to. Make sure your posture is correct, otherwise you can hurt your back.
To do this exercise, rest on your forearms and toes only, keeping your body elevated in a straight line parallel to the floor. Engage your core muscles to give you the strength to hold this difficult posture. The longer you can hold, the better. If you have zero capacity, try holding for only 20 seconds and increase the time limit everyday as you grow stronger.