Harlow’s suggested 10 repetitions and 30 seconds are a starting point, not a universal prescription. As the movements become easy, he recommends gradually making them harder.
That principle matters. Health guidelines recommend adults include muscle-strengthening activity at least twice a week, alongside aerobic activity such as brisk walking. Older adults are also advised to include balance-focused activity.
So the bigger lesson is not to abandon walking or chase a complicated workout. Keep the walk, then add a little strength work. A few well-chosen movements can make a familiar routine more rounded.
Disclaimer: This article discusses general fitness advice shared by Will Harlow and is not a personalised exercise prescription. People with injuries, significant health conditions, balance problems or exercise-related symptoms should seek advice from a qualified healthcare professional before changing their routine.