I find exercising with a block weight plenty of fun, making me more interested in my body building training. The only trouble is that I do not know many exercises to practice. Will you please explain some? A Mat Booster, Harry Timpkis Salt Lake City, Utah. “Learn to play” was once quite a slogan for everybody who had left school behind them. The main idea behind the slogan was to instill into every mind the value of enthusiasm; to keep alive that boyish exuberance which lingers with us for the first few years after we have shelved our school books.