How do you plunge a clogged drain?

To plunge a clogged drain, first ensure there's enough water in the sink or tub to cover the bottom of the plunger. Place the plunger over the drain opening, creating a tight seal, and then push down firmly followed by a quick pull up to create suction. Repeat this motion vigorously for about 15-20 seconds. Afterward, check if the water drains properly; if not, you may need to repeat the process or try another method.