Wow you're a personal trainer as well?? I notice you only have 50 suscribers on Youtube. Wouldn't it be smarter to go all in on Steemit? Just wondering. Yes, everytime I go into Best Buy or the Apple Store they are everywhere! I think they are so effective because it's hard to manually record what you are doing. Over time the analytics and research will show you where you are trending health wise. I use a Fit Bit and also My Fitness Pal to record my calories and macros! I'm excited for someone else on here to be growing the fitness community, keep up the great work Paola! :)