<human>: Give me a shortened version of the text

The other day I bought a heart rate monitor to pair with my Garmin running watch, hoping to get a more accurate (and possibly lower) calorie burn estimate. I was wrong. On my usual walk that I'd always registered 210 calories for (Lose It's estimate based on time and pace), the Garmin read over 500 calories based on heart rate (and weight, age, whatever Lose It also had access to)! I figured that had to be wrong, so I entered my info and heart rate data into an online calculator and it agreed with the Garmin. I know I was wearing the monitor correctly, and today I was able to reproduce the count. Maybe I'm an inefficient walker, maybe it's all the hills, maybe Lose It's estimate just sucks. I dunno.

However, this does explain why my weightloss has been so unpredictable. Some weeks I'd hit my deficit by eating less, but for most I'd eat a reasonable amount then walk off the remaining calories until I was back under my budget. However, the only time I saw real (1.5lbs/week) loss were the weeks I was exercising to hit that deficit, and now I see why.

So, I entered a -400cal offset in loseit, which should set me up to maintain loss even when I can't exercise.
<bot>: I was undervaluing calorie burn during exercise, and that made it difficult to accurately adjust my calorie intake when I didn't have time to exercise. Heart rate monitor fixed that issue.