An add on...

The heart rate monitor - I thought yeah, yeah, gimmick, gimmick. And then I thought, okay maybe I should get one, and now, after a first proper workout wearing it; hearing it beep when my heart rate gets to high so I can go back into the fat burning zone, and then seeing the magic 409 calories burnt at the end of a workout (which admittedly was a workout that turned into vaccuming because I was so close to 300 cals - except have now ended up on 409 cals - so damn worth it.