Circuit training
is
a workout style that involves progressing quickly from one movement to another
in a series. The series is completed when you have done one set of each
exercise. A metabolic circuit is one designed to target certain aspects of the
body’s metabolism during exercise, usually in order to maximize the energy
burned from carbohydrates and fats. Circuit training has also been shown to
safely improve standards in muscular strength and endurance beyond traditional
training alone.
How It Works
In standard
resistance training, you would perform several sets of an exercise, often with
lengthy rest periods, which tends to stress the phosphagen system and glycolysis,
which are your energy systems associated with short bursts of strength and
power. Metabolic circuits cut down on the rest time to maintain intensity with
a higher volume of exercise, which works the slow glycolysis and oxidative
systems responsible for endurance. This style of training continuously taxes
your body for energy, which burns a lot of calories and results in significant
positive changes in body composition and metabolism.
Finding Your Structure
There are many ways you can structure your circuit training to
keep the intensity high and your metabolism rocketing. A popular approach is to
use high-intensity intervals. For example, you could do 30 seconds of work at
your maximum capacity, then rest for 15 seconds and continue to the next exercise.
You could designate a certain number of reps, such as 12 repetitions of each
movement, or ten of some and 20 of others. Try breaking your circuit into
rounds by performing four or five movements with little rest, then taking a one
minute break before the next round.
Metabolic Movements
Circuits can be
tailored to focus more or less on any part of the body, but metabolic circuits
will work best by incorporating full-body exercises. The more muscles you use,
the more energy and oxygen your body will require, creating a deficit that will
burn calories during and after exercise. Thrusters and burpees are two great
full-body motions that stimulate metabolism. You can still pick exercises that
target certain muscles, so long as you choose the best variations. For
instance, if you want to work your chest, do pushups, which integrate your core
and legs, instead of bench presses.
Sample Circuit
The following is a
metabolic circuit that requires only your body weight and a pull-up bar. There
are three rounds with one minute breaks between each round. Perform each
movement for 30 seconds, then rest for 15 seconds before moving on. Round one
is pushups, hanging leg raises, alternating lunge jumps and Russian twists.
Round two is burpees, side lunges, pull-ups and sit-ups. Round three is
pushups, squat jumps, bear crawls and steam engines. As your strength and
endurance improve, you can increase the work time, decrease rest time, and do
the circuit more than once or all of the above.
example of circuit
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