By Corrie Pikul


In as little as one minute a day, you can make noticeable changes to your physique and your fitness level (if you keep it up over time, of course).


If You Have One Minute...Drop And Do 10 Push-Ups (Or 20, Or 5).


pushups

There's a reason that push-ups are every trainer's favorite exercise: They engage muscle groups in the arms, chest, abdomen, hips and legs; they don't require any equipment; they're endlessly adaptable (you can work them into a yoga routine; add jumps to turn them into a cardio move; change your hand position to make them a triceps toner[1] ). More important to most of us is the fact that these intense moves get results. "Female clients have told me that they've seen noticeable differences in their arms after doing daily push-ups against a wall or on the edge of a sink," says Shirley Archer[2] , a certified fitness expert and a co-author of Weight Training for Dummies[3] . In as little as two weeks, the exercise should feel easier (no more soreness!), says Archer, and you may see a visible difference in muscle tone after four to eight weeks, depending on your age and your exercise history. Here's how to do push-ups correctly[4] .


If You Have Four Minutes...Jump And Squat. Rest. Repeat.


The Tabata Protocol[5] , which sounds like the title of a Robert Ludlum novel, is actually a mini-workout that really makes a difference. Originally named after the Japanese fitness researcher Izumi Tabata, this interval workout alternates 20 seconds of ultra-intense exercises with 10 seconds of rest, for a grand total of four minutes. While working with Olympic speed skaters in the mid-1990s, Tabata found that this type of workout helped build muscle and improve aerobic and anaerobic capacity[6] . More recently, Michele Olson, PhD[7] , a professor of exercise science and a principal researcher at the Auburn University at Montgomery Kinesiology Laboratory, revealed that a Tabata-style workout of squat jumps burned 13.5 calories a minute[8] and doubled calorie-burning potential for 30 minutes afterward. Olson's research also showed that this four-minute routine was as effective as five times the amount of traditional cardio[9] . Try it yourself: Do 20 seconds of a full-body move like squat jumps[10] at maximum effort (it should hurt), then rest for 10 seconds. Repeat this circuit continuously for four minutes.


...Or Sprint Up And Down A Flight Of Stairs For Four Minutes Straight.


woman running up stairs


While exercise scientists are still trying to figure out exactly how many (or how few) sprints we need to do to get optimal effects, and how many seconds each interval should last, they all agree that any amount of time is better spent moving than sitting. "We know that all-out intervals -- like you're sprinting to save a child from a burning car -- produce a calorie burn that persists even when you're sitting down," says exercise physiologist Martin Gibala, PhD, the chair of the department of kinesiology at McMaster University in Hamilton, Ontario (and one of the leading HIIT -- high-intensity interval training -- researchers). "But we don't know enough yet to say how much better that would be than a four-minute all-out sprint without breaks." So, if you've got a few extra minutes and are feeling physically spry but too mentally fried to remember how many jump-squats you need to do in what amount of time, Gibala suggests running up and down the stairs or doing a lap around the parking lot -- you'll burn 50 to 75 calories.


If You Have Seven Minutes...Try The Routine That Is Basically Excuse-Proof.


lunges beach


The "scientific seven-minute workout[11] " that appeared in the May/June issue of the American College of Sports Medicine's Health & Fitness Journal (and then in The New York Times[12] ) has a lot going for it: It's fast, it's easy, it works your entire body and doesn't require any extra equipment. You can do it while you're waiting for pasta to cook or for your iron to heat up. That's why it almost immediately became one of the most popular workouts in the country, inspiring dozens of smartphone apps and countless derivative routines. However, the seven-minute workout comes with an important and underreported caveat: The researchers who developed this routine intended it to be repeated three times in a row -- making it more of a 21-minute workout[13] . But they agree that one round is better than none. You'll still get significant calorie burning and muscle-building benefits, especially if you're doing this on your "off days" (i.e., sandwiched between a yoga day and a swim day).


If You Have 10 Minutes...Do A Super-Condensed Version Of Cardio And Sculpting Classes.


These routines from New York trainer Michael Gonzalez-Wallace[14] combine standard gym classics -- for example, biceps curls while lunging -- to help you build muscle and improve balance while getting a full-body aerobic workout. You'll need a pair of weights between two and five pounds-- but that's it! Mix and match the routines to keep things fresh, and remember that the more energy you put into them, the more you'll get out of them.


If You Have 20 Minutes...Break A Sweat With This HIIT Workout.

Hot new research that shows that high-intensity interval training (HIIT) can boost muscular and cardiovascular fitness as effectively as steady-state cardion half the time. This circuit routine[15] was created for Oprah.com by Jessica Matthews[16] , an exercise physiologist for the American Council on Exercise (ACE), and each move involves multiple body parts, adding up to a legitimately challenging workout that even gym bunnies will take seriously.


If You Have 30 Minutes...Grab A Kettlebell.


kettlebell


ACE found that a 20-minute kettlebell routine that involved swinging the weight while lunging, squatting and reaching burned at least 20.2 calories per minute -- which even the study authors admitted was "off the charts."[17] They determined that a well-executed kettlebell routine can be as effective as running at a six-minute-mile pace and then lifting weights. Note: The reason this workout clocks in at 30 minutes instead of 20 is that a dynamic warm-up is non-negotiable. As Jessica Matthews notes, you shouldn't go swinging 15 pounds over your head and between your knees when your muscles are stiff (the ACE study also included a five-minute cooldown, which Matthews recommends for injury prevention).


As a reminder, always consult your doctor for medical advice and treatment before starting any program.


How to Be Your Own Trainer

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  • Your Goal: Find An 'Emergency' Routine You Can Do Anywhere


    You need a portable routine to squeeze in between scheduled workouts -- something you can easily do in your living room, a hotel room or the spare room at your parents' house (where you'll be staying during your next visit). <a href="http://www.oprah.com/health/Dr-Ozs-20-Minute-Workout">This routine by New York City celebrity trainer Joel Harper</a> builds muscle, creates flexibility and keeps your fitness level up without requiring any equipment. Best of all: You need only 20 minutes. <b>Read more:</b> <a href="http://www.oprah.com/health/Dr-Ozs-20-Minute-Workout">The in-betweener quickie workout</a>




  • Your Goal: Work Out At Least Four Times A Week


    You feel the most pumped to work out at night, but deadlines, family, friends and "Mad Men" have made it hard to stick to a schedule. Try picking an evening class (maybe even a pricey yoga or spin session) and treating it like a meeting or a social obligation. When you have a regular fitness appointment, you schedule the rest of your life around your workout instead of trying to fit your workout into your life, says Michelle Kennedy, MS, Best Life fitness expert. If that doesn't work, you may have to override your natural rhythms. The first week or two might be tough, but Kennedy swears a.m. workouts get easier over time. And she should know: because of her schedule and two young children, she needs to leave for the gym by 4:30 a.m. <b>Read more:</b> <a href="http://www.oprah.com/blogs/Ask-Bob-Greenes-Team-Whats-the-Best-Time-of-Day-to-Work-Out">The best time of day to work out</a>




  • Your Goal: Transition From The Treadmill To The Race Course


    You've been racing yourself (or the little red dot that serves as your digital doppelganger) for months, and now you're ready to challenge another runner -- or even a crowd of them. Personal trainer Andrea Metcalf has a six-week guide that will help you run your first 5K in under 30 minutes. It involves alternating a circuit of 2 minutes of walking followed by 2 minutes of jogging and then 1 minute of running. <a href="http://www.oprah.com/health/Andrea-Metcalfs-Six-Week-5K-Training-Program">Get the details, as well Metcalf's favorite post-run stretches</a>. <b>Read more:</b> <a href="http://www.oprah.com/health/Andrea-Metcalfs-Six-Week-5K-Training-Program">The run-for-your-life 5K training program</a>




  • Your Goal: Do Something About Your Tummy


    It's one of life's unfair truths: Your chances of washboard abs are mostly determined by your body type -- like how much extra weight you're carrying and where you're carrying it. But regardless of your abdominal DNA, you can build a stronger, more toned-looking core that can support your back, help you stand straighter (and therefore look slimmer) and lower your risk of injury. Skip sit-ups and crunches, and instead focus on planks: <a href="http://www.oprah.com/health/Essential-Exercises-Push-Ups-Downward-Dog-Squats-Planks/3">Here's how to do them correctly</a>. Once you've mastered them, incorporate your legs and arms by doing <a href="http://www.oprah.com/health/The-10-Best-New-Exercises-for-Women/2">mountain climbers like these with a stability ball</a>. <b>Read more:</b> <a href="http://www.oprah.com/health/Essential-Exercises-Push-Ups-Downward-Dog-Squats-Planks/3">The 6 essential exercises everyone should know how to do</a>




  • Your Goal: Get Red-Carpet-Ready Thighs


    Squats are a big-name trainer's go-to move; you've seen them mentioned in articles about how this celebrity or that one got their pre-baby body back, or got fit for the beach scenes in their last movie, or prepared for that awards show. You know you can't easily spot-shrink the thighs nature (or your parents) gave you, but squats can help you reshape them. For those of us without trainers, doing squats right can be a little confusing. How low should you go? How should you hold the weights? Which way should you point your feet? <a href="http://www.oprah.com/health/How-to-Do-Squats-Exercise-Video">Bob Greene breaks it all down in this short video</a>. <b>Watch the video:</b> <a href="http://www.oprah.com/health/How-to-Do-Squats-Exercise-Video">How to do a squat</a>




  • Your Goal: Develop Comebacks To Your Best Excuses


    You're pretty good about sticking to a fitness plan, but there are those days when you'd really love a kick in the sweatpants. Need a good reason to work out today? <a href="http://www.oprah.com/health/Workout-and-Fitness-Obstacles-Exercise-and-Motivation-Bob-Greene">Here are Bob Greene's Top 10 excuse-busters</a>, including the obvious (you want to look better) as well as the ones you often forget about (you love your kids, you don't sleep well). Print these out and tape them to the inside of your closet -- it's the next best thing to having Bob on speed dial. <b>Read more:</b> <a href="http://www.oprah.com/health/Workout-and-Fitness-Obstacles-Exercise-and-Motivation-Bob-Greene">The one way to boost your mood, sleep better and look great</a>




  • Your Goal: Save Money On Gym (And Trainer) Fees


    A new survey from the American Cancer Society found that women are more likely to consider working out to be "work" than men: Forty percent of women said they would be more physically active in their free time if exercise felt more like play. You can relate. You're sick of cardio machines that don't take you anywhere, and you secretly hope to get kicked out of boot camp. Good news: You can burn just as many calories with some of <a href="http://www.oprah.com/health/Burn-Calories-While-Having-Fun-Fun-Ways-to-Work-Out">these nontraditional exercises that make working out feel fun again</a>. Instead of running, try Ultimate Frisbee, or drop the dumbbells in favor of a hiking pack you can take with you into the hills. <b>Read more:</b> <a href="http://www.oprah.com/health/Burn-Calories-While-Having-Fun-Fun-Ways-to-Work-Out">7 fun exercises your trainer doesn't want you to know about</a>