Well I have personal experience with this. I had chronic pain for a long time and I couldn't go anywhere. I couldn't go to see my friends or to go outside and enjoy anything because I was in constant pain. Eventually, I had depression due to lack of joy in my life and lack of going outside. If you are stuck with physical pain and it causes you to be non-mobile, then you are going to have mental and social issues. Hope this helps :)
A long time ago when schools were first created, they didn't have sports teams or after school clubs. It was morning to afternoon and that was it.
Since most students were fascinated by the things the teacher taught them, they wanted to bring it home and show their family what they were learning in school. So then, homework was created and hasn't stopped since. A good way to deal with homework is to reward yourself for each thing you get done or take breaks every 1/2 hour in order to keep up the good work! Also, you should do your homework as soon as possible to keep everything you learned fresh in your mind, you're more likely to get better accuracy on the assignment. Even though children are developing, schoolwork should be put above going to the mall, sports practice, etc...
It can be challenging because you have to learn at there pace when you have your own pace of working
Humans: legs, walk
bird: wings, fly
insect: legs or wings, fly or walk
fish: fins, swim