None of the displays on my treadmill work. I don't know how fast I'm going or how far I went. I also don't know how much of an incline it is on, but I can tell looking at it that it is on an incline. How should I go about tracking this exercise? I've been walking outside instead so I can use the GPS on the SparkPeople app, but it's just too hot the past few days even in the morning.