It is doubtful that there are any world Demographics on the number of teenagers who go swimming in a year. Since the total world population today (April 20, 2017) is estimated around 7.5 billion, the total number of teenagers would not be in the trillions.
Finding a definitive world-wide population of teenagers is difficult to nail down. The results of an internet search include ages 10 to 24 in a count of 1.8 billion. For the sake of a guesstimate, you could say that 2/3 of 1.8 billion are teenagers - or about 1.2 billion.
Then, determining the percentage of that unknown number that goes swimming is even tougher. Not everyone has swimming facilities available - or any body of water that would do - or one that is safe enough to use for swimming. You also have define what you mean by "swimming".
For the sake of another guesstimate - and likely a gross over-exaggeration - if 50% of the world's teenagers went for a swim in a swimming pool, lake, pond, river or ocean at least once a year, that would be around 600 million teenagers.
You can go swimming 24hours after you have had the stiches removed.
I would have thought swimming shorts would be ok
The problem with teenagers are they get more peer pressured into many things which makes them go through many different stages and they go through many emotional and physical changes now in their lives.
Do you go to Abington Heights High School?
You use many things. You use equipment and muscles.
For boys: Either go bowling, have a baseball party, or go swimming.
Depends what school you go to, but probably not until you take your options (year 10).
-Go bowling -Go to the cinema -Go swimming -Go to the library -Join guides/scouts ...but it generally depends on which 12 year old
polar bears go out swimming at least 3 t 5 times a day , depends on the food they catch every swimming time ....
you can't go swimming!
more teens smoke marijuana because now caught with under and ounce the don't go to jail the may pay a fine and/or take counseling.
Get them to do other things away from the computer ! They could do light exercise, listen to music, tidy their bedroom, go swimming etc...