Hi I am the happy owner of an aluminum Apple Watch 3. I just switched from Fitbit.. most things seem to be working fine, except for the fact that it won't show my pulse/BPM data after cycling workouts, even though it is able to show me my average BPM. I can check my BPM on the watch during workouts, but when I go to check it in the activity app afterwards it says "data unavailable" due to too few measurements. I have tried with both Runkeeper and Apple's own workout app. The weird thing is that I can get the pulse data from my runs with Nike Run Club. I believe I am wearing it pretty snug. I have tried even tighter than I used to wear my Fitbit. Another small nuisance is that the Health app and the activity app often show a different number of stairs climbed. Today the Health app shows 6 and the activity app shows 3. I have had both my phone and watch on me the whole day so far. Anybody else with this problem? Many thanks in advance for your help.