According to a news report, a 25-year-old man in Shenzhen went to the gym for muscle training. However, after his first fitness class, he developed dizziness, nausea and vomiting.
After being sent to the hospital, he was diagnosed with a brain stroke, and there is no doubt that it was caused by inappropriate intense exercise.
Exercise makes us healthier, but if you are not careful, it may backfire and do harm to the body.
Here are tips about exercise that should be kept in mind.
The low temperature in autumn and winter will cause vasoconstriction, which may increase muscle viscosity (the rate your muscles perform movements), and reduce the range of motion of joints and the extension degree of ligaments.
If you don’t warm up before an exercise, it’s easy to develop a muscle or ligament strain.
But the warm-up should not be too intense. Generally, the time for a warm-up is 5-10 minutes in order to reach a state where the body is slightly warm.
Do not exercise on an empty stomach, because the body will consume a lot of energy during exercise. If you exercise when your stomach is empty, hypoglycemia (low blood sugar) is likely to occur.
Avoid strenuous exercise after a meal. During exercise, the blood supply to digestive organs will decrease, which affects our stomach’s digestion of food and causes indigestion.
The recommendation is to rest for at least 30 minutes after a meal before doing exercise.
Many people like to sit down and rest immediately after exercise. But this is wrong.
If you stop exercising suddenly, the blood that concentrated in the muscles of the limbs cannot return to the heart in time, causing ischemia (low blood flow) of the heart.
Then dizziness, nausea, vomiting, shock and other symptoms caused by insufficient blood supply and hypoxia of the brain will occur.
So after exercise, we should walk slowly for 5-10 minutes until we feel the heartbeat and breathing rhythm return to normal.
After exercise, the salt in our body will be lost as we sweat, which could reduce our cell’s osmotic pressure. If we drink a lot of water at one time, the water will flood into the cells and intercellular substance, causing brain cell swelling, which may lead to headache, vomiting, drowsiness, blurred vision and so on. Therefore, we should drink small amounts of water at a time, and drink slowly.
Before starting exercise, we must understand our personal physical condition and athletic ability, and choose an appropriate exercise method. We also should proceed step by step, and not rush for success in order to stay healthy and get the benefits of exercise.
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