How water aerobics works:
Water is much denser than air and therefore has more resistance to movement in any direction.
Advantages of water aerobics over gym classes:
there is no compression load on the spine and joints, since the body is suspended in the water (therefore, water aerobics is recommended for the elderly, pregnant women, people with problems with veins, joints and spine);
double massage, working muscles – from the inside, water from the outside.
the temperature of the water is lower than the temperature of the human body, so the body, being in the water, spends additional energy on warming the body – as a result, spending more calories than in the gym.
The effects of water aerobics, or the result:
increasing the vitality of the body;
improvement of the cardiovascular system;
muscle strengthening;
weight loss;
The main principle of building water aerobics classes:
Each subsequent exercise smoothly flows from the previous one.
Explanation: for example, the previous exercise was completed in the “legs down-together” position, and from this position you should begin the next exercise “presses with two legs right-left.”
The structure of water aerobics classes:

Introductory part
Before the start of the lesson, the instructor should greet the clients and introduce themselves. Briefly describe the content of the upcoming lesson, and identify beginners, give them the necessary recommendations. And also to remind all clients of the correct technique for performing movements and monitoring their condition and the intensity of the exercises performed.

Warm up
Target. Raise the heart rate, warm up the body and thus prepare for the main load.
Time. 5-7 minutes
Content. Simple movements and combinations of movements that warm up the main muscle groups. Running, simple hand presses in different directions, moving forward back, from side to side. The intensity and amplitude of movements should increase gradually.

Main part.
Target. Training of the cardiovascular and respiratory systems, accelerating metabolism, burning fat, strengthening muscles, joints and ligaments, improving joint mobility, coordination, stress relief.
Time. 20-30 minutes depending on the purpose of the lesson. Or about 80% of the total class time. Variants of the main part differ in the selection of funds, the dosage of individual exercises, the pace of their implementation, range of motion.

Final part.
Relaxation exercises, stretching, free calm swimming.