14-Minute Metabolic Workouts: The Fastest, Most Effective Way to Lose Weight and Get Fit
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About this ebook
The book, which features photos to accompany the exercise descriptions, also includes workouts that can be done at the gym, at home, or outside. If that’s not enough, the last chapter contains a cleverly-crafted “menu” of workouts so that readers can choose their own daily workout and create an individualized weekly training program. The perfect gift for anyone trying to lose weight and get fit!
Read more from Jason R. Karp
Lose It Forever: The 6 Habits of Successful Weight Losers from the National Weight Control Registry Rating: 4 out of 5 stars4/5The Inner Runner: Running to a More Successful, Creative, and Confident You Rating: 4 out of 5 stars4/5
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14-Minute Metabolic Workouts - Jason R. Karp
CHAPTER 1
CARDIO WORKOUTS
The ancient Greeks may have been the first to acknowledge the existence of the heart, which they named kardia. Aristotle identified the heart as the most important organ of the body and believed that it was the center of man’s soul. I’m not sure if my soul is linked to my heart or not, but the heart is certainly linked to my life, as it is to yours, since its only responsibility is to deliver blood and oxygen to all of your organs to sustain life. It is always working, from before you’re born until you die.
Despite the attention our society gives to the muscles on your legs, arms, and abs, your heart is where life lives. How well your cardiovascular system works governs to a large extent how healthy and fit you are. When you are cardiovascularly fit, you are functionally younger than your biological age. Research shows that cardiovascular fitness is more important than body weight or body mass index in determining your health and predicting your mortality. Obese individuals with at least moderate cardiovascular fitness have about one-half the rate of cardiovascular disease or all-cause mortality than their normal-weight but unfit peers. In other words, it’s better to be overweight and fit than to be thin and out of shape. Cardiovascular endurance is the most important component of physical fitness because the functioning of your cardiovascular system—your heart, arteries, and veins—is so essential to overall health. You cannot live very well or very long without a healthy heart.
Heart disease is the leading cause of death in America. So it pays to make your heart as strong as possible and keep your coronary arteries clear. And cardio workouts do that better than anything else. They clear your coronary arteries, drive your heart rate up, and place a demand on your heart, causing it to respond by becoming stronger. The constant push of oxygen through your blood vessels that occurs when you exercise aerobically is a superb stimulus for waking those vessels up and improving blood flow to all your organs. Cardio workouts increase the amount of hemoglobin inside your red blood cells, which transports oxygen through your blood vessels. The more hemoglobin in your blood, the greater your vessels’ oxygen-carrying capability. Cardio workouts also affect your muscles, specifically increasing the amount of mitochondria and enzymes inside of them, making your muscles better consumers of oxygen and better fat-burning machines.
Perhaps the most elegant adaptation your body makes to cardio workouts—especially interval training—is an increase in the size of your heart. The enlargement of the left ventricle of your heart results in a greater stroke volume, which is the amount of blood your heart pumps out with each beat. The larger your left ventricle, the more blood it can hold; the more blood it can hold, the more blood (and oxygen) it can pump. Your cardiovascular fitness and health is largely dictated by your heart’s ability to pump blood and oxygen. Make a better heart and you make a healthier person.
Apart from its direct effects on your cardiovascular system, cardio workouts also impact other aspects of your health. They decrease blood pressure, cholesterol, and percent body fat; reduce the symptoms of depression and the risk for certain types of cancer; and increase connections between neurons in your brain, enabling you to think better and more creatively.
There is so much scientific evidence to prove the biological benefits of cardiovascular exercise that it’s fair to say that it is the single best thing you can do for your health. If you want to get the most fitness, biggest calorie burn, and most potent health boost out of the least amount of time—like 14 minutes—cardio interval workouts are the most time-efficient workouts you can do. So let’s get started.
VO2MAX WORKOUTS
It’s Sunday morning. You get out of bed and prepare to go out for a run. You put on your moisture-wicking socks and shirt, lace your shoes, and head out the door. Before you even take your first step, the cortex of your brain stimulates your autonomic nervous system, which causes your blood vessels to constrict and your blood pressure to rise. Within a few strides of your run, you start to breathe faster and deeper. The number of times your heart beats each minute (heart rate) and the volume of blood your heart ejects with each of those beats (stroke volume) both rise to match the greater demand of your muscles for oxygen. More blood flows through your vessels—15 to 20 times more than when you’re sitting on your couch. If you keep increasing the pace until you’re huffing and puffing like you’re going to blow grandma’s house down, you’ll reach your VO2max, the maximum volume of oxygen your muscles consume per minute.
First measured in humans in the 1920s, VO2max is the single best indicator of your aerobic fitness. Think of VO2max as the size of your aerobic engine. When you exercise at your VO2max, your cardiovascular system is working as hard as it can—your heart rate and stroke volume reach their maximum values, which makes your heart bigger. VO2max intervals are like strength training for your heart.
For the following VO2max interval workouts, all of which take 14 minutes or less to complete, choose your favorite type of cardio exercise (e.g., running, cycling, rowing, or swimming) and alternate periods of high-intensity (hard-effort) exercise and low-intensity (easy-effort) recovery. Keep the recovery intervals active to keep oxygen consumption elevated throughout the workout. This helps you reach your VO2max sooner during each subsequent rep, enabling you to spend more time working at your VO2max intensity during the workout. In addition to using a percentage of your maximum heart rate (HR) as an objective measure of intensity, the workouts also include Rating of Perceived Exertion (RPE) as a subjective measure of intensity. RPE is a rating of how hard the intensity feels and is based on a scale of 1 (easiest) to 10 (hardest). Warm up prior to each workout, starting at a low intensity and progressing to a higher intensity to create a smooth transition from the warm-up to the workout. Begin the workout within a couple of minutes of completing the warm-up.
VO2max 5 x 1
VO2max 4 x 2
VO2max 3 x 3
VO2max 2 x 5
VO2max Alternating 1–2
VO2max Ladder
VO2max Pyramid
AEROBIC TEMPO WORKOUTS
Tempo workouts are high-end aerobic efforts that are comfortably hard. The intensity of tempo workouts corresponds to an important physiological variable called your acidosis (lactate) threshold, because it marks the onset of acidosis—the drop in pH in your muscles that causes them to become acidic and to fatigue. When you exercise below the acidosis threshold, the intensity is purely aerobic, but when you exercise above the threshold, it is both aerobic and anaerobic. The higher above your threshold you go, the more anaerobic it becomes and the more you fatigue, in part because of the greater drop in pH in your muscles. The intensity just below and above the threshold is the difference between the effort feeling comfortably hard and uncomfortably hard. Think of the acidosis threshold as the percentage (or fraction) of your VO2max engine that you can sustain aerobically.
To do the following aerobic tempo workouts, all of which take 14 minutes or less to complete, choose your favorite type of cardio exercise (e.g., running, cycling, rowing, or swimming) and alternate periods of comfortably hard effort and easy-effort recovery. You can do aerobic tempo workouts outside or in a gym. The workouts should feel comfortably hard, with an RPE of 7 to 8 on a scale of 1 to 10, and you should reach about 80 to 85 percent of your maximum heart rate during each rep. Keep the intensity as steady as possible during the workout. To help you hold the rhythm of the workouts, try listening to music with a moderate tempo. Warm up prior to each workout, starting at a low intensity and progressing to a moderate intensity.
Aerobic Tempo 5 x 2
Aerobic Tempo 3 x 4
Aerobic Tempo 2 x 6
Continuous Aerobic Tempo
FARTLEKS
Fartlek, that funny-sounding word known among runners that makes high school girls giggle on the first day of cross-country practice, is a free-form type of high-intensity cardio workout, during which you increase the intensity at different times, when you reach specific landmarks, or simply based on how you feel. Rep duration, intensity, and recovery intervals all vary within the same workout. The workout comes from the Swedish words fart, meaning speed, and lek, meaning play, and dates back to 1937, when it was developed by Swedish track coach Gösta Holmér to train Sweden’s military.
For the following fartleks, all of which take 14 minutes or less to complete, choose your favorite type of cardio exercise (e.g., running, cycling, rowing, or swimming) and alternate periods of hard effort and easy-effort recovery. You can do fartleks outside or in a gym. Listen to your body and increase the intensity based on how you feel, making the hard efforts feel like a 7 to 9 rating of perceived exertion (RPE) on a scale of 1 to 10.
Fartleks are meant to be fun, so have fun with them. Run on a trail or cycle on a bike path around a lake. Warm up prior to each workout, starting at a low intensity and progressing to a moderate intensity.
Classic Fartlek
For the Classic Fartlek, which is completely free-form, increase and decrease the intensity whenever you want for however long you want or, if outside, from one landmark to another, for a total of 7 minutes of increased intensity during the workout. If you do the fartlek in the gym on a treadmill, elliptical machine, rowing machine, or bike, increase the intensity one (or more) of three ways:
1) increase only the speed/RPM
2) increase only the