High Intensity Interval Training (HIIT) is a specific type of interval training routine. It is mostly used for individuals trying to lose weight. It has a number of distinct goals and differences which make it unique.
It’s basically circuit training which takes your body out of its comfort zone helping you to achieve your results whatever they may be (weight loss, fat loss, body toning, pre ski training, sports specific training, general health and fitness...).
People of any fitness levels can perform circuit training as there are different ways and different intensities to perform all exercises and people can work to their own ability.
It could consist of many different exercises such as squats, lunges, squat jumps, squat thrusts, ski sits, calf raises, leg swings, short sprints, long sprints, sprints on the spot, wall press-ups, bench press-ups, box press-ups, tricep dips, static tricep holds, crunches, sit-ups, seated crunches, v-sits, flutter kicks, twists, side bends, jumping jacks, step-ups, mountain climbers, static stomach holds, planks, side planks, hip raises, superman dorsal raises, resistance exercises using a partner and the list goes on and on bringing equipment into the equation.
After circuit training you accumulate something known as EPOC (excess post-exercise oxygen consumption). This leaves your body regenerating for 24-48 hours after the actual workout, which elevates your metabolism, so you burn more calories (fat), even when you are doing nothing!
HIIT and circuit training has been proven to be more beneficial than conventional stop start gym workouts and continuous exercise like cycling, swimming and jogging.