My name is Sarah Lessner (@lesslessner), and I am 36 years old. I live in Denver, Colorado, and I am a software engineer. Realizing I needed to change my lifestyle before it starts affecting my health ...

Here are five of the best HIIT exercises of all time. Build muscle, improve conditioning, and score a killer total-body workout in no time flat. High-intensity interval training, or HIIT, is an ...

If you’re short on time but still want to maximize how much fat you can burn and muscle you can build, try these 30-minute HIIT workouts. Directions: A complex is a very efficient method of weight ...