In this stroke, body positioning and arm movement are key aspects of having a speedy backstroke. It is important to keep the body straight and aligned from the head to the feet. The swimmer's ears should be under the water, however, their neck should be slightly propped up and eyes up and back.
The swimmer's shoulder is the main source of power for all their arm movement. Furthermore, the palm of the hand should be facing downward as it enters the water and turned around as it exits the water (this technique is to reduce resistance). As for the swimmer's legs, they should be together and powered by the movement of the swimmer's hips. The kick for this stroke is simple, it should be done at the speed the swimmer feels most comfortable.
Considering the swimmer is on their back for this stroke, breathing is not too complicated. Often, swimmers will take a breath each time they complete a full cycle. What this means is, each time both arms have entered the water they will take a breath, for a swimmer to have a timed breathing pattern could help them gain momentum.
There are a few key don'ts while performing the backstroke. Firstly, the swimmer should not allow their hips to drop into the water. Like previously stated, they should be leveled in the water. Next, the swimmer should not lift their head or strain their neck in this stroke, it will undoubtedly slow them down. Lastly, the swimmer should not hold their breath or skip breaths on each cycle, this could lead to fatigue and slow the swimmer down by the end of the race.