What is circuit training?

Performing back to back exercises with little to no rest

Circuit training means alternating between exercises with little to no rest in between. You might alternate between various strength training exercises or strength training exercises and cardiovascular (‘cardio’) exercise.

Strength training exercises:

• In a circuit, strength training exercises generally last 30 – 60 seconds.
• They can be done using machines, resistance bands, your own body weight, free weights (dumbbells), etc.

‘Cardio’ exercises:

• In a circuit, ‘cardio’ exercises generally last 30 seconds – 2 minutes.
• They can include any exercise that noticeably increases your breathing and heart rate. For example, jogging in place, doing jumping jacks, jumping rope, using a stationary bike, etc.

Sample upper body circuit (with cardio) – beginner:

• Single arm row – dumbbell and bench
• 30 seconds marching or jogging in place
• Chest press – dumbbells and bench
• 30 seconds of jumping jacks
• Bicep curls – dumbbells and bench
• 30 seconds marching or jogging in place
• Overhead triceps extension– dumbbell and stability ball
• 30 seconds of jumping jacks.
• Shoulder raise – dumbbells and stability ball
• 30 seconds marching or jogging in place

You can create your own circuit at home or at the gym, or you can take a circuit training class. If you take a class, the exercises are typically set up as stations and you move to the next station when the instructor tells you. Calories burned circuit training.

http://www.fitnessforweightloss.com/what-is-circuit-training/