12-3-30 Walking Workout: Cardio Replacement?

by Dr Natalie Singh - Health Editor
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Published December 13,2025 03:02AM

To me,there’s nothing better than embarking on a long hike with my dog Ollie. But I work full-time and live in a city,which means that climbing a mountain every day isn’t possible.If I want to get my exercise fix during the work week, I need to jump on my Peloton or head to the gym.

I genuinely love running on the treadmill,but for most of my life,I’ve stuck to the same routine: a three- to five-mile jog at roughly 9 miles per hour (mph). But a recent trend caught my eye: the 12-3-30 walking workout, which involves setting your treadmill to a 12 percent incline and walking at 3 mph for 30 minutes.

The 12-3-30 workout was created by health and beauty influencer Lauren Giraldo, who claims it helped her reach her goal of losing 30 pounds. *(Watch her fitness journey in the video below.)*

I was curious whether this workout would be as effective as my treadmill runs and, if so, how often I’d need to do it to build strength and maintain my cardiovascular fitness. Here’s what I learned.

Just How Effective Is the 12-3-30 Walking Workout?

Dr. Constance Chu, a sports medicine physician at Stanford Medicine, told me the 12-3-30 workout is a great idea, especially for people who don’t enjoy running or can’t run due to an injury.Why? weight-bearing exercises, or activities where you work against gravity, are known to improve physical and mental health, she says.

Even better: the 12-3-30 workout is low-impact, so you aren’t going to pound your joints as you would while running on a hard surface, making it an effective workout for beginners and seasoned athletes alike, says joe Hribick, a physical therapist and clinical assistant professor of physical therapy at Lebanon Valley College.When you walk uphill, your body experiences a broader range of motion, increased joint movement, and greater“`html





You vs. The Year 2025 Running Challenge

Published: 2025/12/13 18:11:46

You vs. The Year 2025: A Thorough Guide

The You vs. the Year 2025 running challenge, hosted on MapMyRun, is a long-term fitness goal designed to motivate runners to accumulate mileage throughout the entire year of 2025.This challenge encourages consistent running and provides a framework for achieving notable distance goals.

What is the “You vs.The Year 2025” Challenge?

This challenge isn’t about speed; it’s about endurance and consistency. Participants aim to outrun the year 2025 by logging more miles than the number of days in the year – 365 miles. Runners can track their progress using the MapMyRun app or website, and the challenge fosters a sense of community among participants striving for the same goal.

How Does the Challenge Work?

The core mechanic is simple: run and log your miles. Here’s a breakdown:

  • Registration: Participants register for the challenge through the MapMyRun platform.
  • Mileage Tracking: Use the MapMyRun app (available on iOS and Android) or the website to record each run. The app automatically tracks distance, pace, and elevation.
  • Progress Monitoring: MapMyRun provides tools to monitor your cumulative mileage throughout the year, allowing you to see how close you are to reaching the 365-mile goal.
  • Community Engagement: The challenge frequently enough includes a community aspect, allowing runners to connect, share their progress, and motivate each other.

Benefits of Participating

Taking on the “You vs.The year 2025” challenge offers numerous benefits:

  • Increased Motivation: Having a year-long goal provides sustained motivation to run regularly.
  • Improved Consistency: The challenge encourages consistent training,leading to improved fitness levels.
  • Community Support: Connecting with other runners fosters a supportive surroundings.
  • Achievable Goal: 365 miles is a challenging but attainable goal for many runners, regardless of experiance level.This equates to roughly 30.4 miles per month, or about 7.75 miles per week.
  • enhanced Tracking: Utilizing MapMyRun provides detailed data about your runs, helping you analyze and improve your performance.

Who is this Challenge For?

The “You vs. The Year 2025” challenge is suitable for runners of all levels, from beginners to experienced marathoners. Beginners can use it as a stepping stone to build a consistent running habit, while experienced runners can use it as a base-building phase or a fun way to maintain fitness.Adjusting the mileage goal to suit individual fitness levels is also possible.

MapMyRun and Under Armour

MapMyRun is a popular fitness tracking app owned by Under armour. it integrates with other Under Armour Connected Fitness apps, providing a comprehensive view of your fitness activities. The platform offers features like route discovery, training plans, and social sharing.

Frequently Asked Questions (FAQ)

  • Can I use other running apps? While you can run with other apps, mileage must be manually entered into MapMyRun to count towards the challenge.
  • What if I get injured? Listen to your body and prioritize recovery. You can adjust your mileage goal or take breaks as needed.
  • Is there a cost to participate? Participation in the challenge is generally free, but some premium features within MapMyRun may require a subscription.
  • What happens if I exceed 365 miles? There’s no limit! Keep running and celebrate your achievement.

Key Takeaways

  • The “You vs. The Year 2025” challenge is a year-long mileage goal hosted on MapMyRun.
  • The primary goal is to run 365 miles or more throughout 2025.

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