1 Walking and stretching are good warm-up exercises. Stretching the muscles in the front and the back of the thighs is a good way to warm up the knees. 2  Make the leg muscles strong by doing certain exercises (for example, walking up stairs, riding a stationary bicycle, or working out with weights). Walking and stretching are good warm-up exercises. Stretching the muscles in the front and the back of the thighs is a good way to warm up the knees. 2  Make the leg muscles strong by doing certain exercises (for example, walking up stairs, riding a stationary bicycle, or working out with weights).
By the time the telephone came along, the Americans were saying âhulloâ to each other every day, so it was a short jump to âhelloâ. But it wasnât until the telephone was invented that âhelloâ emerged as a universal form of greeting and as a way of establishing contact.
This Month in Physics History. October 1958: Physicist Invents First Video Game. In October 1958, Physicist William Higinbotham created what is thought to be the first video game. It was a very simple tennis game, similar to the classic 1970s video game Pong, and it was quite a hit at a Brookhaven National Laboratory open house. Higinbotham was born on October 25, 1910 in Bridgeport, CT and grew up in Caledonia, NY.