Today I went to the gym (the one that I really don't care for that much) and did cardio on the treadmill. I thought that I would take it easy today since today wasn't a HIIT cardio day so I did the fat burn setting. I started off doing a warm up on the 2.5 speed setting for 2 minutes and then increased the speed to 3.5. Because I was out of my Target heart rate zone to burn fat, the machine kept lowering my speed and I ended up walking at a pace of 2.8 for the entire 30 minutes. I think next time I will just use the manual setting and adjust...