Does self-monitoring improve your health?
12 August 2013 Last updated at 10:29 BST
From pedometers that tell us how far we walk, to gadgets that monitor our sleep, if we want to keep tabs on how healthy we are there's a device out there that will let us do it.
But can they really help us improve our lifestyles? Horizon has taken a look at some of the ways we can check up on our own health.
The programme followed three women who made use of the equipment and found that self-monitoring is simple.