I use the Tabata training principle whenever I exercise at my house. It's been proven time and time again to be an effective training method, especially when you are short on time and want to maximize the efficiency of your results.
High-intensity intervals can be classified as brief exertions of maximum output, usually in the range of 20-40 seconds of intense activity, followed by a designated resting or recovery period. You could complete an entire high-intensity workout with minimal equipment in 20 minutes or less.
One of the biggest fitness resolution killers is pain. The question we need to ask: Is pain, or more importantly, forcing through pain, necessary for increasing our athletic ability and reaching new heights of fitness, performance, and health?