General gymnasiums need more than 18 people to enter (except for children's training). Older people over 60 and special people need to be accompanied by a personal trainer for proper exercise. Special groups include: people with three highs, people with heart problems and people with hypoglycemia.
If you want to buy fitness equipment, you'd better go to a professional fitness equipment store, or you can go to a sports counter or sports city in a shopping mall.
Gym,,, Nothing to sell, right? Hmm. How interesting