The treadmill readout said I burned about 195 calories for this 30-minute workout. But I also tracked each workout over the two weeks with my Apple Watch, which noted that I burned a range between 210 and 230 total calories. For comparison, for me:
30-minute rowing workout at a moderate pace: burns around 205 calories
30-minute outdoor run: burns about 240 calories
30-minute, chill-paced outdoor walk around block (with doggy pee breaks): burns about 140 calories
I noticed that when doing these walking workouts, setting the pace to 3.0 mph forced me to keep that speed up. When I'm rowing, I'm in charge of keeping my pace, and on the Apple Watch, I could see that my heart rate range was about 20 BPM (beats per minute) lower than during the 12-3-30 workouts.
Over the course of the two weeks, I definitely felt leaner in my belly. And doing this walking workout inspired me to use my treadmill desk a little more. But I also didn't take as many walks outside because of freezing temps here in Vermont, so I think that evened out.