People in the office usually sit for most of the day when they work. But this is bad for a person’s health. When people sit for too long every day, they don’t move very much. So it is easy to start getting fat. Sitting for too long is also bad for their work because it makes them want to sleep. When this happens, people may make more mistakes in their work or spend more time finishing their work. Companies need workers to be healthy, so how do they fix the problem?

Some companies have different kinds of desks to help their workers. The first kind of desk is the standing desk. The desk can be taller when a person wants to stand. It can also be shorter when the person wants to sit. Another kind of desk is the walking desk. This desk is made so that a person can work while walking at the same time. Workers in the companies like the different kinds of desks very much. They think these desks are quite useful.

The Information About Some Great Inventions

Let’s look at two old but popular inventions we use in our daily life.

Band - Aids （创可贴）

The first Band - Aid was made by American Earle Dickson in 1921. The idea came to him by chance. Dickson’s wife Josephine often cut her fingers in the kitchen. At that time gauze（纱布） and adhesive tape（胶带） didn’t come together. People had to cut them to the right size. Dickson found they were always too big and soon fell off. So he put a piece of gauze on the centre of a piece of tape. This is how he made the first Band - Aid.

Later, Dickson’s new inventions became very popular all around the world.

Bubble gum（泡泡糖）

Bubble gum was invented by accident. In 1928, American gum company worker Walter E. Diemer played around with new chewing gum recipes. Chewing gum had already been invented more than half a century before then. But Diemer found that the gum he made was easy to blew. He blew a bubble and then saw the possibilities. He took some of his new gum to a shop and it sold out in a single afternoon. Since then, Dubble Bubble - the first brand of bubble gum - has made kids happy all around the world.