This reporter runs with the Galaxy Watch Ultra 2 during a running event hosted by Samsung Electronics at St. James Park in London, Thursday (local time). The photo may look effortless, but capturing it while running took far more attempts than the reporter would like to admit. Korea Times photo by Nam Hyun-woo

LONDON — We all make the same promise to ourselves. I should exercise more. I should lose weight. Then comes the excuse. It's too hot outside. Work has been exhausting. Tomorrow seems to be a better day to work out. This one missed workout becomes two, a week and then a month.

This reporter does that all the time. During nearly 15 years at The Korea Times, my weight steadily crept up. Every now and then, guilt pushed me out the door for a short run only to stop with gasping breath. That was usually enough to convince myself I had "worked out," often followed by an oversized meal.

This reporter carries the Galaxy Watch Ultra 2 and the Galaxy Z Fold 8, both loaned by Samsung Electronics for the event. Korea Times photo by Nam Hyun-woo

Things changed almost after buying a smartwatch almost by accident — a product I write about but never seriously considered buying. Since the beginning of this year, I have run at least 5 kilometers almost every day and have steadily lost weight. I can now proudly call myself a beginner runner, and I owe much of that change not to stronger willpower, but to the device.