12. HIIT

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If you haven't heard of HIIT training yet, let me introduce you!

HIIT is a fantastic form of exercise that stands for High Intensity Interval Training ( HIIT).

It involves short quick routines that are done at a fast pace, and you alternate different exercises with no rests in between.

You'll only have to do about 20 minutes to burn around 300 calories, without any cardio at all.

You might do jumping jacks for 30 seconds, then hit the floor and do 10 pushups, then jump back up to do 30 seconds more of jumping jacks, followed by 15 squats, then 25 situps, and whatever else the exercises are.

Each HIIT sequence is different, and made to challenge the body through constant exercises that are never the same repetitive motion for the entire sequence, like running, for example.

This increases the heart rate, tones muscles and trains the body to have to adapt, which burns a ton of calories in a very short period of time.

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