A 30-Minute, Calorie-Burning, Beginner Strength-Training Workout

• Run in place while lifting your knees high to the level of your waist. Engage your abs as your knee comes up.
• Pump your arms to warm up your upper body.
• Continue running in place for 30 seconds.

Complete three rounds of circuit one. After your third round, take two to three minutes of rest, and then begin the first round of circuit two.