The simplest way to work out at home is to use your own body. There are a variety of effective body weight exercises that can help you build strength, endurance and burn calories. And by circuit training (going from one exercise to the next, without little or no rest), you keep your heart rate up, burn more calories and get the most out of your exercise time.
Sample Strength Circuit Training (No equipment)
Michael McGovern, Crusader Committee Member, Chairman of Irish Milers Club