Most people think of exercise as something you do only for your body. But after 90 years of living, I’ve learned something important: if you want to stay sharp, you should look for ways to exercise your mind at the same time.
One simple habit I’ve used for years is counting my exercise repetitions in reverse. Instead of counting up like most people do, I count down. It turns ordinary exercise into a small mental challenge, and that makes a big difference over time.
To make this even more effective—and more enjoyable—we developed a simple program to help you do exactly that. You can try it here: count your reps in reverse.
Why Count Backwards?
When you count forward, your brain is mostly running on autopilot. One, two, three, four… there isn’t much thinking involved.
But when you count backward—especially by different numbers—you force your brain to pay attention. Now your mind has to stay engaged while your body is working. That’s what I like to call mental exercising.
Over the years I’ve found this does three important things:
- It makes repetitive exercise less boring
- It gives your brain a small daily challenge
- It gives you a reason to come back because it feels like a game
And anything that makes exercise more interesting makes it easier to stay consistent.
How the Program Works
We designed the program to be simple but flexible. There are two main settings you can adjust at any time using the dropdown menus.
First is the number of repetitions.
You can select anywhere from 2 to 25 repetitions depending on your exercise and your ability level.
Second is the number you count down by.
This controls the mental difficulty. For example, counting down by 1 is easy. Counting down by 3, 4, or 5 requires more concentration.
Each time you press the start button, a voice announces a randomly selected starting number. Based on the number of repetitions you chose and the number you’re counting down by, the program also gives you the number you should end on.
This gives you a built-in accuracy check.
If you reach the correct ending number, you know two things: you completed the correct number of repetitions, and you counted correctly.
If you go lower than the ending number, you probably did the right number of reps but made a counting mistake along the way.
It turns exercise into both a physical and mental accuracy test.
Making Exercise More Interesting
Repetition can get boring. Anyone who has exercised for years knows that boredom is one of the biggest enemies of consistency.
This simple mental challenge adds just enough variety to keep things interesting without making things complicated.
I’ve always believed that the best exercise program is the one you will actually stick with. If something makes you look forward to your workout—even just a little—that’s a big advantage.
A Simple Way to Add Mental Exercise to Your Day
Researchers often talk about the importance of keeping the brain active as we age. Activities that challenge thinking—especially ones involving attention and problem solving—are often associated with maintaining cognitive function as we get older.
You don’t need anything fancy to do this. You can combine physical movement and mental focus in small ways every day. Counting backward during exercise is just one practical way to do that.
The important thing isn’t complexity. It’s consistency.
Practical Tips for Getting Started
- Keep your reps consistent across exercises
If you’re doing several movements in a session, using the same number of repetitions helps maintain your rhythm. - Start easy if math isn’t your strength
Pick a small number to count down by so the experience stays enjoyable. - Increase difficulty gradually
As you get comfortable, you might try counting down by larger numbers. The goal isn’t to struggle—it’s to stay engaged. - Focus on accuracy, not speed
This isn’t a race. The goal is controlled movement and careful thinking. - Keep it enjoyable
If it stops being fun, make it easier. Consistency matters more than difficulty.
A Small Habit That Adds Up
At my age, I don’t look for miracle solutions. I look for small habits that I can repeat day after day. Those are the things that really make the difference.
Counting your repetitions in reverse won’t change your life overnight. But doing small mental challenges like this regularly may help you stay more engaged with both your exercise and your thinking.
And when something helps you show up every day, that’s a habit worth keeping.
Final Thought
You don’t have to separate physical fitness and mental fitness. You can train both at the same time.
Sometimes the smartest improvements are also the simplest ones.
Just change how you count.
