It is a real time-saving, pleasurable way for fat-burning cardio. However, this is not just "10 minutes and quit". These are 10-minute "drills", or "mini-sessions" of cardio throughout the day.

If you eat before exercise, you need more time, to start burning your stored fat. Your body needs to burn all the calories from food, before it starts to burn it's storage. So more you eat, more time you'll need. And it can take from 40 minutes to an hour just to get started! But you can get your body into fat-burning mode more quickly.

When fasting, you are burning fat almost from the first minute of exercise. And a multiple, shorter bouts of cardio can burn more fat and do it faster than one long bout.

When you wake up, you're coming off of a six to nine-hour fast. Your blood sugar is low, and your body is burning primarily fat for fuel until you eat your first meal. When you exercise in this state, you force your body to draw more of its energy requirements from your body fat rather than from carbohydrates.

Lack of time is one of the more common excuses people make for not exercising. Buy anyone can find 10 minutes here and there! Just make sure, to exercise before you eat!

Three 10-minute sessions would be a great start. You just need something you can do during that 10 minutes that's effective and convenient. And you should exercise at about 65-75% of your maximum heart rate (more intensely, you risk muscle loss). Just a good, steady workout.

Here are some tips:

a brisk walk
simple stairs (walk up and down your office stairs for 10 minutes)
jumping
jumping jacks
squats
kicks
butt kicks
march in place
jog in place
high-knees jogging
jumping rope

10 Minute Cardio Workout examples:

1st Workout Option:

1. TWO MINUTES - March in place. Pump your elbows and step briskly. If your fitness level permits, take this to a comfortable jog.
2. TWO MINUTES - Jump rope. Lack the coordination or fitness? Twirl an "imaginary" jump rope with your hands by your sides and jump in place.
3. ONE MINUTE - Lateral shuffle. Start by getting into a wide-stance squat (keep your back flat, knees bent, feet turned out to 45 degrees, and thighs parallel to the floor). Then propel yourself across the floor and back, taking short, choppy steps. Don't let your feet come together.
4. TWO MINUTES - Take the stairs at a safe but brisk pace. Need to take it slow? Try climbing two steps at a time.
5. ONE MINUTE - Recovery! Stand with feet hip-width apart, hands on hips. Extend your right leg in front of you, tapping your heel on the floor. Return to starting position and repeat, rapidly, with your left leg. Try to keep your torso lifted and abs tight.
6. ONE MINUTE - Do jumping jacks.
7. ONE MINUTE - Do push-ups, either military or modified (on your knees). Do as many as you can.
8. COOLDOWN - March in place, pumping your elbows. Then ratchet it down slowly to stepping in place.

2nd Workout Option:

1. Walk in place
2. Side Plank (1 30 sec. Segment each side)
3. Standing Knee Ups (alternate lifting knees across body)
4. Lying Circles with legs 90 degrees off floor (start off with little circles toward the sky) Keep your lower back anchored to the floor.
5. Squats with weighted (Grab a baby, medicine ball or dumbbells) Body Twists
6. Standing Side Bends (w/ hand weights, cans or heavy book)
7. Standing Knee Ups
8. Side Lying Oblique Crunches
9. Squats with weighted Body Twists
10. Cross Over Crunches (Opposite shoulder lifted toward knee crossed over leg)

3rd Workout Option:

1. Jumping Jacks
2. Lying Knee Sways (Lay on back, move knees from left to right)
3. Lunge with Upper Body Twists
4. Bicycle Crunches (opposite elbow to knee with other leg extended)
5. Jumping Jacks
6. Sitting Hip Sways (Lean slightly back, keep toes on floor, Shift weight from hip bone to hip bone)
7. Lunge with Upper Body Twists

4th Workout Option:

A great exercise to do it outside:

You'll want to warm up first so you don't risk any injuries. Then do your 4 minutes of intervals, which is: 20 seconds of walking and 10 seconds of sprinting or running. Then you'll have a 2 minute rest; you can just stand in place or walk really slow if you want. And to finish it up you'll just do the 4 minutes of intervals over again the same way you did before; finishing up with the sprint/run interval.

It's pretty simple and it'll only take you 10 minutes to do. But don't think this isn't going to work you hard; you'll be breathing heavy at the end.

You may find that you burn a lot more fat — and your "lack of time" excuse gets burned up at the same time!