system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why is it bad for young kids to weightlift​?

Why do medical professionals advise against intense strength training for little kids?
gpt
Muscle development that outpaces normal activities for a child can have detrimental effects on bone growth. It can cause stress in areas while the bones are still calcifying, resulting in a multitude of different issues including: bone deformities, contractures, etc.