Somewhere in Fulshear right now, a parent is sitting in their car outside a practice field, scrolling a fitness article, and quietly thinking, “Sure, I’ll just work out five days a week. Right after I finish the laundry that has been living in the dryer since Tuesday.”
I’ve spent more than 30 years as an Exercise Physiologist and personal trainer, and I’ve run over 30,000 sessions. The number one reason people give me for not exercising has never changed. It’s not laziness. It’s time. Jobs, commutes, school pickups, homework, dinner, and a calendar that looks like a game of Tetris played by someone who hates you.
So when a new study came out about how little high-intensity training you may need to shrink belly fat, I paid attention. And I think busy Fulshear families should too.
What the Researchers Actually Did
A research team in Hong Kong gathered 315 adults who weren’t exercising and were carrying extra weight, mostly around the middle. The average participant was about 48 years old, with a BMI near 29 and a waist measuring roughly 37 inches. In other words, regular people, not professional athletes who eat chicken out of Tupperware at 5 a.m.
They split everyone into three groups:
- Group one did all of their weekly high-intensity interval training (HIIT) in a single session.
- Group two did the exact same total amount, but spread across three sessions during the week.
- Group three didn’t exercise at all. They just attended health education classes every other week.
Both exercise groups got 75 minutes of HIIT per week in total. The only difference was how they sliced it up. The study ran for 16 weeks.
The Surprising Result
Both exercise groups lost significantly more body fat than the group that sat in classes. The once-a-week crowd lost about 1.7 pounds more fat than the non-exercisers. The three-days-a-week crowd lost about 2.2 pounds more. When the researchers ran the numbers, the gap between those two exercise groups wasn’t statistically meaningful.
Let that sink in. Cramming the work into one session performed about the same as spreading it out.
Both groups also improved their cardiorespiratory fitness, which is a fancy way of saying their hearts and lungs got better at delivering oxygen when they worked hard. And nobody got hurt. No exercise-related injuries were reported.
The researchers noted that this “weekend warrior” approach could knock down one of the biggest barriers to exercise, which is simply not having the time.
Before You Run Out the Door Sprinting
Now, I’ve been doing this too long to let you take this and run off to do a 75-minute all-out sprint session tomorrow morning on a body that last did cardio chasing a toddler through H-E-B.
Here’s where my real-world coaching hat goes on.
Work up to it. Those participants were studied under research conditions. If you’ve been inactive, ease in with shorter intervals and plenty of recovery, and build over several weeks. If you have heart concerns, joint issues, or any medical conditions, talk with your doctor first. Your waistline is not worth a trip to the ER.
HIIT is not a complete program. This study looked at fat loss and heart fitness over 16 weeks. It did not say that one workout a week covers everything your body needs. Think of HIIT as one great tool in the toolbox, not the whole garage.
Strength training still matters, a lot. Muscle naturally declines as we age, and lifting is one of the best ways to slow that slide. It also supports your metabolism, bone density, blood sugar control, and just the everyday ability to carry groceries, kids, and that one oversized Costco item you absolutely did not need. HIIT doesn’t fully deliver those benefits on its own.
Daily movement counts too. Walking the neighborhood, taking the stairs, playing in the yard with the kids. None of it is glamorous, and all of it adds up.
What a Realistic Week Might Look Like
A schedule that works for a lot of busy parents I coach looks something like this:
- One focused interval session, ideally on the day your schedule has the most breathing room, whether that’s Saturday morning or a quiet Sunday.
- One or two short strength sessions at home. Twenty to thirty minutes with a couple of dumbbells or even just your bodyweight is plenty to start.
- Walking whenever you can sneak it in. Phone calls, soccer sidelines, evening laps with the family.
That’s it. No gym membership drama, no 45-minute drive on Highway 99 just to use a squat rack. Fulshear is growing fast, and your fitness plan should be as easy to live with as your own backyard.
The real takeaway from this research is that something beats nothing, and a plan you can actually stick with beats a perfect plan you quit in nine days. Consistency wins every time. Flexibility isn’t a loophole, though. It’s a strategy.
Need a Plan That Fits Your Life?
This is exactly why I wrote Busy Parent Health and Fitness, my 4-week fitness program designed for parents who have more responsibilities than hours in the day. It walks you through workouts that fit into real schedules, so you don’t have to guess what to do or when to do it.
And since fat loss isn’t just about exercise, my recipe collection Thin In the Kitchen will help you handle the dinner side of things with meals that don’t require a culinary degree or three hours of prep. If you want to target something specific, like building muscle or tackling weight loss, I also have smaller topic-focused ebooks you can browse on the site.
Grab the book, pick your one big weekly workout, add some strength and some walking, and give it 16 weeks. Your future self, the one who can touch their toes and still has energy at 7 p.m., will thank you.
