I Tried the Viral 12-3-30 Workout for 21 Days: Here's My Love-Hate Honest Review

Have you ever procrastinated on starting a fitness challenge, only to find yourself haunted by the thought of it? Meet Beatrice Caruso, a weight loss warrior who knows this struggle all too well. With her disarming blend of humor and honesty, Beatrice takes us on a journey through her experience with the viral 12-3-30 treadmill workout. From calf-cramping woes to unexpected knee discoveries, Beatrice's candid account invites readers to laugh, learn, and perhaps find the motivation to tackle their own fitness goals. Keep reading to follow Beatrice's three-week adventure and discover whether this trendy workout lives up to the hype.

What Is 12-3-30?

Beatrice explains, "Lauren Giraldo is a YouTuber. She typically does kind of lifestyle vlogs, and a while ago she went through a body transformation. She wanted to get healthier, she wanted to get more fit, but I don't want to tell her story and everything. I think she says it best and her video. Highly recommend. love her. As she was going through this body transformation, she came up with this challenge and it's a pretty straightforward concept and a lot of people started doing it. You just walk on a treadmill at a pace of three incline of 12 for 30 minutes, and in her video she said she did that five to six times a week."

My First Day: A Rude Awakening

"That is not easy, dude. … Oh man. I'm not conditioned for that kind of cardio anymore," Beatrice recounts. "For the past little while before this, I've just been walking on the treadmill. Nothing wrong with that, but walking uphill, it's such a steep climb. I don't know. 12 is steep. I'm not going to lie. Dying a little bit, very sweaty, very hot."

The Calf Conundrum

"I'm just going to let you know right now that walking at an incline of 12 is a special kind of [he-e-double-hockey-sticks]. It wouldn't be so bad. For the most part, my respiratory system has caught up. It doesn't feel as terrible on my lungs. However, my calves just keep getting tighter and tighter and I don't really know what to do about it," Beatrice shares.

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My Theory on Tight Calves

Beatrice theorizes, "When I was younger, I used to walk on my tiptoes everywhere. For years I would just be walking around in my tiptoes. So the equivalent of wearing heels in your developmental years. So I think that because when you're on your tiptoes, this is going to be a bad example, but when you're on your tiptoes, your calf is always contracted and then the front muscles extended how muscles work. But I have this theory that my calf muscle never fully lengthened."

The Unexpected Knee Discovery

"As I was trying to find interesting camera angles to make the monotony of the treadmill the slightest bit more interesting for you guys, I noticed something about my knees. It looked like baby heads, do they not? It looks like I was supposed to be triplets in the womb and I absorbed my siblings straight into my knee holes and they're just there now forever. Try to unsee it. I dare you," Beatrice humorously observes.

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My Calves Were Killing Me

"I didn't like it... I didn't like this challenge. For me personally, my calves killed me the entire time I was making up in the middle of the night with muscle spasms in my calves, which yeah, I would not have survived without rest days," Beatrice confesses. "And me saying that I didn't like the challenge is in no way, shape or form any kind of shade toward Lauren. She's absolutely amazing."

The Results

Beatrice shares her results: "When I began, I weighed in at 230.3 pounds and at the end of the 21 days, I now weigh 224.5 pounds. That means I lost 5.8 pounds during this challenge. Here are my beginning and ending measurements, and as you can see, I kind of lost everywhere on my body with the most loss coming from around my abdomen. Very happy about the two inches lost around my belly."

What I Saw in the Mirror

"So here we have the before and after pictures. I'm not seeing too much of a change, maybe in my face a little bit and maybe in my stomach, but otherwise, these look pretty identical," Beatrice notes. "And then we get to the side view, which is where I see the weight loss. Pretty significant change in my stomach. I'm very bloated in this one. I felt bloated that day. My double chin's kind of poking through. You can't really see it in this one because my shoulder's in the way, but it's a little less. But my definitely went down."

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Closing Thoughts

Beatrice concludes, "Ultimately just happy in general for completing the challenge, getting it out of the way. Another box checked and now we can focus on other things, hopefully more enjoyable things. Hopefully not like me having a petty beef with a challenge, you know what I mean? Hopefully it's something that I want to do, but I digress." And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

YouTuber Beatrice Caruso (@BeatriceCaruso) decided to try the 12-3-20 viral treadmill routine created by fitness influencer Lauren Giraldo (Giraldo lost 30 pounds using the method, and the results were pretty impressive. The method is simple enough, but it is not easy—Giraldo says when she first started it, she could barely make it through two minutes without being out of breath. So, how exactly do you do it? You get on a treadmill, set the incline to 12 percent, and walk for 30 minutes at 3 miles per hour five times a week at least. Caruso also thought it sounded easy… until she tried it five times a week for three weeks. Here’s what happened.

Huge Challenge

The first time Caruso tried the method, she was shocked at how challenging it was. “I've just been walking on the treadmill. Nothing wrong with that, but walking uphill, it's such a steep climb. I don't know. 12 is deep. I'm not going to lie,” she says.

Incline Is Tough

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Caruso slowly started to get used to the challenge. “I'm just going to let you know right now that walking at an incline of 12 is a special kind of hell,” she says. “It wouldn't be so bad. For the most part, my respiratory system has caught up. It doesn't feel as terrible on my lungs. However, my calves just keep getting tighter and tighter, and I don't really know what to do about it. I've tried foam rolling. I stretch every single day, and then I focus extra on my calves.”

She Did It!

Caruso was thrilled to finally complete the challenge. “We have completed the Lauren Giraldo Treadmill Challenge!” she says. “This challenge, in particular, has not been about weight loss at all. It's evolved into a personal vendetta. For whatever reason, I have fixated on this challenge, and I would just not let it go. I was like, I need to complete this one. It's going to bother me if I don't. And we finally did it.”

Weight Loss Results

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Caruso was pleased with the results of the challenge. “When I began, I weighed 230.3 pounds, and at the end of the 21 days, I now weigh 224.5 pounds. That means I lost 5.8 pounds during this challenge.”

Body Changes

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Caruso noticed changes over her whole body. “I kind of lost everywhere on my body with the most loss coming from around my abdomen,” she says. “Very happy about the two inches lost around my belly. I was feeling very, very bloated at the beginning of this challenge, and I don't feel as bad now, but whatever. I was expecting to lose a little bit everywhere overall just because that's how my body typically decides to lose weight.”

Want to try the method for yourself? Read on to find out how to get the most of it.

Be Prepared

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Fitness newbies should expect to find it difficult at first. “It’s definitely on the harder side,” exercise physiologist Katie Lawton, MEd, tells the Cleveland Clinic. “That’s a steep incline — and it’ll really feel like it’s over 30 minutes.”

Choose Your Shoes

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You’re on the treadmill a LOT with this challenge, so make sure you have the right shoes. “Choose shoes with proper arch support, a firm heel and thick flexible soles to cushion your feet and absorb shock,” says the Mayo Clinic. “Wear comfortable, loose-fitting clothes and gear appropriate for all types of weather, such as layers in cooler weather.”

Don’t Hold the Rails

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Giraldo admits she sometimes holds onto the treadmill, but it’s better not to. Holding onto the rails will mean fewer calories burned, so keep that in mind.

Embrace the Incline

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We know it’s hard, but the incline is what makes this workout so effective. "I like to use inclines within the general warm-up phase of a training session when we’re trying to reach a specific heart rate quickly," personal trainer Chance Ruggeroli tells Texas Health. "However, walking at an incline can be a great exercise on its own. It is an excellent substitute for those recovering from injury, trying to reduce the impact on their joints, or to get an efficient workout within a small window of time.”

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Listen To Music

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Caruso admits that her first time doing the workout was more difficult because she didn’t have her headphones. “Studies show that faster-paced music tends to help improve athletic performance when a person engages in low-to-moderate level exercise, either by increasing distance traveled, pace, or repetitions completed,” according to the National Center For Health Research.

Is your Sports Bra Working Out?

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Ladies, don’t underestimate how important a good sports bra is. “One secret to a good sports bra is fit,” says Nichola Renwick, Senior research associate at the University of Portsmouth, via The Conversation. “It has been reported that 70-100% of women are not wearing the correct bra size. It might be that you are a different size in different brands, so the best way to ensure you wear the correct bra size is to follow the best-fit criteria.”

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Stay the Course

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Consistency is key—stick to the workout, and you will get results. “The faster, farther, and more frequently you walk, the greater the benefits,” says the Mayo Clinic. “For example, you may start out as an average walker and then work your way up to walking faster and walking a mile in a shorter amount of time than an average walker, similar to power walkers.” And if you enjoyed this article, don't miss12-3-30 Walking Method: 20 Proven Tips to Lose Weight Faster.