I see a lot of people wearing various body tech to help out with fitness - step counters, heart rate monitors, calorie counters, etc.
Overall, while they are pretty cool, there hasn't been much to show that they help people achieve meaningful changes. That's not to say that they don't work for some people, but if your goal is to make a meaningful change (run a marathon, lose 10 lbs, walk more) then a fitness tracker is a good way to get a baseline and track changes initially but then we usually reach 2 cognitive traps:
- Fatigue: Sometimes you just don't want to keep wearing something or keep monitoring the reports because of the extra effort it takes, even if it's minimal, because you stopped seeing benefits to justify it
- Too much focus on Quantity: We have a tendency to reward ourselves for meeting certain goals, I.e. hit 10,000 steps today so I can have an ice cream after dinner. I think this even goes beyond conscious choices too when we look for something beyond the goal to be our reward.
Do I recommend them? Depends on what your goal is but for most people, I think they end up being more of a distraction. What's better? Something with a human touch to it - think of all the successful habit changing groups out there - one common thread is having a human to help you achieve success.
Here is an article I found about the performance of wearable tech versus something like a training partner or group that helps hammer things home a bit more.