The 12-3-30 treadmill workout is a popular routine created by Lauren Giraldo, involving setting a treadmill to a 12% incline, walking at 3 miles per hour (mph), for 30 minutes, five times a week, for benefits like weight loss and improved endurance, all with low impact on joints. It's essentially a steep, steady incline walk that builds strength and cardio without running, making it great for beginners or those wanting low-impact exercise.
Yes, the 12-3-30 treadmill workout (12% incline, 3 mph, 30 mins) works as an effective, low-impact cardio routine that builds strength, boosts calorie burn, and aids weight loss when paired with a calorie deficit and balanced diet, though it's not a magic bullet and requires good form, especially for beginners who might need to start slower. It increases intensity without the pounding of running, making it great for endurance and leg strength, but consistency, proper posture (engaged core, shoulders back), and diet are crucial for success.
The “12-3-30” refers to the settings you're going to use: an incline of 12, a speed of 3mph, for 30 minutes – hence the name! It's a routine that was made popular by fitness influencer Lauren Giraldo, who found it to be a game-changer for her own fitness journey.
Beginners should start 2-3 times a week for less than 30 minutes, gradually increasing to the full 12-3-30. Advanced individuals can aim for 5–6 times a week for 45 minutes to an hour. Throughout the workout, remember to listen to your body and adjust as needed. This will help you maintain a safe and effective workout.
The 12-3-30 Workout
During this workout, you'll set the incline to 12, speed to 3, 3 mph, and walk for 30 minutes. The 12-3-30 workout is perfect for beginners because it quickly increases your heart rate and doesn't require continuous training like running.
Walking on an incline can help you lose weight in your belly and all over your body. To do that, slowly increase the time and intensity to burn calories and meet or exceed the recommended amounts of weekly exercise.
What to Eat Before a Workout
Key Takeaways
Walking 10,000 steps on a treadmill typically requires 90 to 120 minutes at moderate pace (3–4 mph), making it an achievable daily fitness goal for most individuals regardless of weather conditions or time constraints.
Adjusting the gradient takes the activity to a whole new level—of intensity, that is. “A 150-pound person doing the 12-3-30 will burn about 300 calories in 30 minutes,” says Michele Olson, Ph. D., a senior clinical professor of sports science at Huntingdon College in Montgomery, AL.
With one hour on the treadmill, you can burn many calories and enjoy many health benefits. However, always remember not to overdo it and to reach your goals gradually. Before you start running, you must ensure that you can walk on the treadmill for at least an hour at a speed of 4-5 km/h.
Disadvantages of Using a Treadmill
Even if your treadmill has extra cushioning, the high impact from jogging or running can still cause joint pain in your ankles, knees, or hips. If your joints start to hurt, slow your pace or stop altogether.
On average: Someone weighing around 125 pounds might burn 200–250 calories in 30 minutes. At 155 pounds, the burn can climb to 270–320 calories. At 185 pounds, you could be looking at 330–380 calories or more.
The most effective type of exercise to help you lose fat overall – including fat around your middle – is aerobic exercise. When you do aerobic exercise, your heart works harder to pump blood around your body to deliver oxygen to your muscles as you exercise.
It Makes an Incline Workout Less Effective
But if you hold onto the treadmill, you cancel out the incline's benefits. Holding on turns a steep hill into a flat road—you're not getting the full workout! Example: Imagine climbing a mountain while pulling yourself up with a rope—it's way easier than using just your legs.
As fitness trainer Rachel Cosgrove explains, “Incline training activates the glutes, hamstrings, and calves more intensely, turning a simple walk into a full-body workout.” Increasing the incline on your treadmill not only intensifies your workout but also boosts your heart rate, contributing to more fat burning.
The U.S. Department of Health and Human Services recommends moderate-intensity aerobic exercise for 150 to 300 minutes a week. Doing the 12-3-30 workout five times a week would get you into the low end of that range. But don't jump to five times a week all at once.
The 6-6-6 walking rule is a viral fitness trend: walk for 60 minutes (briskly) with a 6-minute warm-up and a 6-minute cool-down, ideally at 6 a.m. or 6 p.m., for 6 days a week, making it a simple, low-impact routine for improved heart health, energy, and mood, according to health.com, Healthline https://www.healthline.com/health-news/666-walking-trend-weight-loss?ref=healthshots.com, Vogue, Healthshots, and Medium. It's praised for being accessible, requiring no special equipment, and fitting easily into busy schedules, reframing walking as a consistent ritual.
If you only have 20 pounds to lose, it's likely to take more than two months to reach your goal. This isn't meant to discourage you, but rather, to point out that weight loss can be a slow process and it's important to keep your goals realistic based on your personal situation.
The best exercises to lose belly fat before bed include planks, leg raises, bicycle crunches, Russian twists, glute bridges, side planks, and reverse crunches. These exercises are designed to be gentle yet effective, targeting your core muscles without interfering with your sleep.
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