Bought the Apple Watch because I like gadgets, but also because I wanted help improve my fitness. The problem is the main fitness feature, the heart-rate monitor NEVER WORKS. Whenever I go to the gym it says "Cannot read, try again." I'll keep pressing it and it just won't read it properly. When it does manage to read my heart rate, it will sometimes give me half the real rate. Ex: If my heart rate is 120 it will show up as 60. Extremely frustrating. The weird thing is it used to work and only be slightly buggy, but as time passes its gotten more and more buggy to the point of it being unusable. Not sure if it has to do with the summer heat, but if that's the case, Apple should've tested it better. Thinking about selling it if it doesn't improve with a software update.