To prevent cramps and drowning during swimming, attention should be paid to the following points:
1. Firstly, do not swim when hungry or fatigued, as low blood sugar is prone to occur during hunger. In low blood sugar or fatigue, if encountering cold water stimulation, it is easy to experience cramps.
2. Adequate preparation activities should be done before entering the water:
Move the neck by bending the head forward, tilting back, and rotating the back 10-15 times; Raise your shoulders, circle your arms, and perform 10-15 chest expansion exercises to move your shoulders and chest;
Extend your legs, bend over, touch your toes with both hands, bend your knees and hips, and perform 10-15 alternating squats and stands to move your knees; Before entering the water, wet your limbs, chest, abdomen, and back with cold water by the pool or shore to gradually adapt to the temperature of the water.
3. Toe movement. The key is to sit on the ground with straight legs, lift one leg straight, and repeatedly pull the toes with your hands to improve the flexibility of the muscles behind the toes and big and small legs, and prevent cramps from occurring.
