十万个为什么·科学启蒙30篇（3）

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人为什么会抽筋

During soccer drills, my calf suddenly tightens and won’t relax for several seconds.
This cramp hurts most when I run hard or stretch too quickly without warming up.
My coach reminds us to drink water before, during, and after every practice session.
Sometimes eating a banana helps because it gives me potassium my muscles need.
I rub the sore spot gently while taking slow, deep breaths until it eases.
Cramps happen more often in hot weather when sweat carries away important minerals.
My physical therapist taught me simple stretches to do before bedtime and after games.
Wearing proper cleats also helps keep my feet steady and reduces muscle strain.
If it happens often, I tell my parents so we can check with our family doctor together.
Now I carry a small water bottle and stretch for five minutes before every match.