Hi Chris, I have used this a couple of times now. I found for the first day it was as bit out but settled after that, also tried putting the sensor in and activating it after 24 hours which showed a marginal improvement in early readings. Make sure you clean the area well with the swab and dry...
Often what happens after exercising regularly over a period of time is your metabolism increases so you are burning food more quickly even though you are not exercising at that particular time. Therefore lowering your average BG