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.
Biographical Sketch: William (Willy) A. Higinbotham. Excerpted from William A. Highbotham: Scientist, Activist, and Computer Game Pioneer by Kristen J, Nyitray. Published in the April - June 2011 issue of IEEE Annals of the History of Computing. After reading an instruction manual that accompanied a Systron-Donner analog computer, William Alfred Higinbotham was inspired to design Tennis for Two, the first computer game to display motion and allow interactive control with handheld controllers.