How to balance Load Focus on a Garmin
A common problem some Garmin users face is a shortage in Low Aerobic Load. In this article, we explain how to balance your Load Focus, with a particular emphasis on the Low Aerobic category.
Garmin Load Focus – what is it?
Most Garmin watches have a Training Load metric, or in the case of newer watches – an Acute Training Load. This shows if you are doing enough exercise for your current fitness level. The goal is to be in the sweet spot, not doing too much and risking injury, but doing enough so that you are pushing yourself hard enough to make gains.
The difference between Training Load and Acute Training Load lies in their timeframes and focus. Training Load reflects the total strain from your workouts over the past 7 days, providing insights into your overall fitness progression. In contrast, Acute Training Load focuses on a shorter, ~4-day window, offering a real-time snapshot of your recent efforts to help fine-tune daily or weekly training intensity and avoid overtraining.
Some watches also show something called a Load focus. This goes into a bit more detail by quantifying which category your exercise effort falls in. To display a value Garmin needs at least four weeks worth of training data.
The benefit of an exercise can be Anaerobic or Aerobic.
Anaerobic activity is short-lasting but high-effort. Think high-intensity interval training, weightlifting, and similar. It is the type of exercise that quickly leads to a buildup of lactic acid, causing fatigue. Occasionally doing anaerobic fitness activities leads to high fitness gains. It helps build lean muscle and teaches our bodies to burn calories more efficiently.
Essential reading: Top fitness trackers and health gadgets
Aerobic training, on the other hand, involves low to moderate intensity. It is also called cardio or endurance training – a steady-pace effort that you can maintain for a medium to long distance. This type of training helps to burn fat and slim down.
Garmin further splits the Aerobic category into Low and High Aerobic. And this is the area where some people struggle.
Low Aerobic Load – a shortage is a common problem
Devices with Load Focus provide a chart that shows how much of each of the above-mentioned three categories you need: Anaerobic, Low Aerobic, and High Aerobic. The goal is to hit the optimal range in each. This is based on a rolling four-week average.
A quick 5K or 10K run will mostly lead to High Aerobic category points. While this is perfectly fine, you do not want to spend all your time in the Anaerobic and High Aerobic categories. A balance is required.
A common issue that many users face is a shortage of Low Aerobic. It might look something like this:
So how do you increase Low Aerobic?
Low Aerobic training improves fat metabolism, increases mitochondrial density, and enhances cardiovascular efficiency. These adaptations help your body use energy more effectively, delay fatigue, and build endurance for long workouts.
This type of training also strengthens the heart and supports faster recovery between high-intensity sessions. By reducing the risk of overtraining and injury, Low Aerobic efforts provide a solid foundation for sustainable, long-term fitness progress.
Garmin says “Try working in more easy runs or rides to balance your higher intensity activities”.
For those that train with heart rate zones, it means spending most of your time in the 2nd zone. That’s about 60-70% of your maximum heart rate. So make sure your heart rate zones are properly set, as newer Garmin devices now offer auto-calibrated heart rate zones based on your historical activity data.
Zone 1 will not be worth many Low Aerobic points – an easy hike or brisk walk will simply not do it. It is too low in terms of sustained effort. You need an extended Zone 2 workout. Spending most of your time in the higher zones, on the other hand, will only lead to gains in High Aerobic and Anaerobic points.
So find an activity that keeps you in the low-intensity Zone 2 – the one that is coloured in Blue. These should be exercises that last a while, such as a steady pace 60 minute run. They are labeled by Garmin as Recovery or Base activities. Another example is rowing at a mild to moderate effort. You’ve got to experiment a bit to find what works for you.
Recent Garmin updates also allow you to monitor real-time Training Effect metrics during workouts. This can help you adjust intensity to stay in the Low Aerobic zone.
Low Aerobic exercises aren’t hard, as they produce strain at a much slower rate than high-intensity efforts. But they do take up a lot of time.
This Firstbeat table shows a bit more detail as far as the options.
A common mistake with Low Aerobic training is pushing too hard without realizing it—what starts as an easy session can quickly turn into something more intense. Another is ignoring it altogether and sticking only to high-intensity workouts, which can lead to burnout or injury. And don’t forget to double-check your heart rate zones—if they’re off, you might not be training at the right intensity. The key is to keep it chill, stay in Zone 2, and not overthink it.
Do some slower stuff – high-intensity workouts are not the only ones to go for
Put simply, you need to do some slower stuff to balance your Load Focus. Don’t push yourself hard each time you head out. It is too easy to slip into the thinking that higher-intensity efforts are the only ones to go for.
Slowing down might feel awkward and might not come naturally for some. You could even find you have started a lower-intensity workout, but gradually increased intensity as the workout progresses. We’ve all been there.
Finally, there is some good news for those who like to push themselves. The Recovery Time for Aerobic Low activities is short. So the Training Load drops quite a bit after one or two days of no activity. Which means you can head out again shortly after a Low Aerobic workout, and give that 5K personal best another go!
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