These four strokes focus on different parts of the body. Swimmers can choose their favorite strokes, focus on strengthening strength training in a certain part of the body, and lose body fat in a targeted manner.

1, breaststroke-leg strength

In freestyle and backstroke, the thigh way is to kick the water up and down, and only breaststroke is a pedal clip. The former can make legs more slender, and the latter uses quadriceps femoris more, so it is very effective for strengthening leg strength.

2, butterfly-chest strength

In butterfly stroke, the arm strokes inward, which is similar to chest expansion. Exert more force on pectoralis major, extensor dorsi and rectus abdominis, and the exercise effect is also the best.

3, freestyle-arm strength

In freestyle, biceps brachii and triceps brachii exert more force, which can effectively exercise arm muscles and improve shoulder muscle strength.

4, backstroke-back strength

When backstroke, the extensor dorsi will exert more force and stretch the back muscles. In addition, when backstroke, you need to lift your hips and slide, which is also an exercise for your hips.