A simple activity – walking – is experiencing a global resurgence in popularity as a fitness trend, despite previously being considered too gentle for serious exercise. New research suggests this accessibility may be the key to sustainable improvements in physical health, brain function and overall quality of life. This renewed interest in walking comes at a time when public health officials are seeking accessible ways to promote wellness and combat sedentary lifestyles.
At the forefront of this movement is the “12-3-30” treadmill formula, a three-step workout gaining traction as the exercise method of 2026.
The formula is straightforward:
- Set the incline to 12 percent
- Maintain a speed of 3 miles per hour
- Continue for 30 minutes
Individuals with access to a treadmill can begin immediately, while those without can replicate the workout by walking uphill on a natural incline.
‘กรุงเทพธุรกิจ จุดประกาย’ explored why this seemingly ordinary activity is attracting attention from health professionals.
Why Walking is Re-emerging as a Fitness Trend
Numerous studies demonstrate that daily walking is associated with a reduced risk of cardiovascular disease, type 2 diabetes, and dementia. It also aids in weight management, strengthens muscles, improves focus, enhances emotional stability, and boosts brain plasticity – the brain’s ability to form new connections.
Roy Hamilton, a professor of neurology at the University of Pennsylvania School of Medicine, explained that walking briskly for approximately one hour several times a week provides significant aerobic benefits for the brain.
He added that exercising in the early morning or evening may offer additional benefits to the heart, metabolism, and sleep quality, and that warming up before and cooling down after exercise is always recommended for safety.
How the 12-3-30 Formula Differs from Traditional Cardio
What sets the 12-3-30 formula apart from general cardio recommendations is its clarity. There’s no room for interpretation, calculation, or questioning whether you’re doing enough – simply follow the numbers.
Analysis from video-sharing platform Virlo.ai, which studied over 1,100 health and fitness videos totaling nearly 70 million views, revealed that structured walking content, particularly the 12-3-30 method, had higher save and rewatch rates than typical gym-based fitness content.
Nicolas Mauro, co-founder of Virlo.ai, explained that the data reflects a shift towards exercise that people can realistically incorporate into their routines. The 12-3-30 formula is easy to understand, remember, and repeat, which is more important than novelty or extreme intensity.
The analysis also found that individuals aged 30, 40, and 50 and older were highly engaged, especially when presented as a “long-term sustainable activity” rather than a rapid weight-loss program.
Evidence of Calorie Burn and Fat Loss
Comparative experiments showed that the 12-3-30 formula and treadmill running burn a comparable number of total calories, but incline walking utilizes a higher proportion of fat for energy and is a low-impact exercise, making it suitable for a wider range of people.
Incline walking also increases cardiovascular and metabolic responses without placing the same impact stress on joints as running.
Accessible Without a Treadmill
Even without a treadmill, the formula can be performed outdoors by selecting routes with hills, slopes, or stadium stairs. Walk continuously for 30 minutes, or repeat incline walks, such as five rounds of six minutes each.
An appropriate pace is a brisk walk where you can still talk, but not sing, breathing faster but remaining in control.
This walking formula produces similar heart rate, metabolic, and leg and hip muscle engagement as using a treadmill. Exercising outdoors can enhance mental engagement and reduce stress.
Why People are Sticking With It
Researchers have observed that people are growing tired of extreme fitness culture and are seeking exercise that fits into their real lives.
Nicolas concluded that the success of 12-3-30 isn’t about intensity, but about lowering barriers. It’s a clear system where people realize what to do, how long it will seize, and when they’re finished. This clarity is what makes it sustainable.
long-term health isn’t about the most grueling workout, but about the activity we can return to again and again, day after day.
