[vidarh]

I try, and for periods have succeeded, in tracking my diet and weight in detail, partly to support my exercise and partly because I'm prone to over-eating... The biggest challenge is that it needs to be extremely simple. A notebook sort-of works - it's easy to jot something down -, but with the caveat that taking the time to transfer notes and add up calories etc. to actually get any use of it is slow.

Smartphone works for me, but only with an app that is tailored to my workflow. Sensors that could capture lots of it semi-automatically would make a great deal of difference.