I've been beginning my walk/jogs with a walk of about 400 feet to warm up. However, during that warm up today, I could tell my body and legs were tired, and I walked the whole 1.5 miles. I didn't sleep very well last night due to my smoke detectors going off about every half hour for most of the night. The alarms started a few minutes after midnight and would sound for a few seconds and then turn off. It was hard to tell which alarm was causing the problem, because the alarms are tied together such that they all go off even though only one detector may originate the alarms. There was no fire or smoke in the house, and the alarms were false alarms. I was glad last night that the detectors weren't monitored by an alarm company, but in the case of a real fire, it would be nice to have them monitored. The picture shown below is of a different brand but the same kind of detector (I think) as my detectors.