Nowadays, the high levels of child and teenagers that are spending most of the time indoor. I think this is problem of some teenager why they do not want to go outside or why they like to spend time indoor, but there are some solution.
A reason why they do not go to outside but they love to stay indoor. Because they reluctant to socialize due to be bullied by people in the school or the people around them. While they think that we are in the comfort zone, so anyone can not attack them, and they can do anything that they can do inside. Outdoor is dangerous zone for them so that they do not dare to go. Such as, my cousin who has a son that he like to stay alone and introverted stay in the room
Possible solutions to encourage the child to go outside that are you have to teach or explain them whether going out has advantages, show them more beautiful places in the world. In addition, if the youth always stay at home for longtime may have negative effect for them. For example, When my cousin's son can go outside he has a better mild, has a smile and look lively than when he stayed inside home and his mom practice him to talk with other.
In conclusion, the problem of the teenagers and child that they spend a lot of time their indoor. So this problem can effect to them and they are afraid to leave their comfort zone. However, these problems can be dealt with talking to them, slowly taking out out of the house and doing activities outside. 
Nowadays, the high levels of child and  
teenagers
 that are spending most of the time  
indoor
. I  
think
 this is  
problem
 of  
some
  teenager
 why they do not want to go  
outside
 or why they like to spend time  
indoor
,  
but
 there are  
some
 solution.
A reason why they do not go to  
outside
  but
 they  
love
 to  
stay
  indoor
.  
Because
 they reluctant to socialize due to  
be bullied
 by  
people
 in the school or the  
people
 around them. While they  
think
 that we are in the comfort zone,  
so
 anyone can not attack them, and they can do anything that they can do inside. Outdoor is  
dangerous
 zone for them  
so
 that they do not dare to go. Such as, my cousin who has a son that he like to  
stay
 alone and introverted  
stay
 in the  
room
Possible solutions to encourage the child to go  
outside
 that are you  
have to
 teach or  
explain
 them whether going out has advantages,  
show
 them more  
beautiful
 places in the world.  
In addition
, if the youth always  
stay
 at home for longtime may have  
negative
 effect for them.  
For example
, When my cousin's son can go  
outside
 he has a better mild, has a smile and look lively than when he stayed inside home and his mom practice him to talk with other. 
In conclusion
, the  
problem
 of the  
teenagers
 and child that they spend  
a lot of
 time their  
indoor
.  
So
 this  
problem
 can effect to  
them and
 they are afraid to  
leave
 their comfort zone.  
However
, these  
problems
 can  
be dealt
 with talking to them,  
slowly
 taking  
out out
 of the  
house
 and doing activities  
outside
.