A hobby is not a job or a school subject. A hobby is something you enjoy doing in your spare time. It's not something you need to do. It's just fun. Some people make model ships, keep pets, plant flowers, play computer games or chat on the Internet. Some paint pictures or dance to music. Some collect everything from stamps to seashells  ... People take up hobbies because they think these activities can bring them many things like happiness, friendship and knowledge. Anyone, rich or poor, old or young, sick or well, can have a hobby. A hobby will make your life colorful. ,. When do people often take up hobbies?
In their work time. In the daytime. In their free time. In the holiday.