A. alternating class B. stepping class C. point-to-ground class D. leg?

Reference answer: a.

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The basic steps of aerobics 13 are as follows:

1, basic steps of elastic class

The basic steps of bouncing are mainly divided into stepping and bouncing. Steps include positive step, walking step, word step, V step and so on. Bouncing kick includes ponytail, back kick, bouncing kick and so on. The main feature of this step is that the knee joint and ankle joint should be buffered quickly, and various movements and posture changes can be completed in the process of obtaining buffering.

2. Basic steps of point-to-point classification

The basic steps of spot shift mainly include front spot, back spot and side spot. In aerobics, using different parts to point the ground can change the direction of movements and reflect the relationship between different rhythms and movements. The basic steps from point to surface are mostly combined with changing direction or turning.

3. The basic steps of striding.

The basic steps of stepping mainly include crossing step, merging step, walking and so on. These steps are mostly used in directional movements, such as lifting legs after stepping, and the basic steps of stepping are helpful to improve the expressive force of movements.

Benefits of practicing aerobics

1, enhance physical fitness

Enhance cardiopulmonary function: Aerobics is an aerobic exercise, which can effectively improve cardiopulmonary function and enhance physical endurance. Enhance muscle strength: All kinds of movements in aerobics need muscle contraction and relaxation, which can effectively exercise muscles and improve muscle strength. Improve physical coordination: Aerobics needs physical coordination, which can be effectively improved by practicing aerobics.

2. Improve mental health.

Relieve stress: Exercising aerobics can release stress and make people feel relaxed and happy. Enhance self-confidence: By practicing aerobics, you can shape your figure and enhance your self-confidence. Improve concentration: Aerobics requires concentration and can exercise concentration.

3, improve posture and body shape

Improve your posture: Various movements in aerobics can help adjust your posture and make your body more upright and elegant. Shape your figure: By practicing aerobics, you can exercise your whole body muscles and shape your beautiful figure. Weight loss: Aerobics is aerobic exercise, which can consume a lot of calories and help to lose weight.