I use the system from
The Hacker's Diet. You measure daily (or however often you want) and with a simple calculation you can keep track of the "trend", which accounts for fluctuations.
Basically, you take the difference between today's measurement and yesterday's trend, round it, divide it by ten, and add it to yesterday's trend to make today's trend. That sounds kinda complicated, so here's an example:
Yesterday's weight: 80 (kg)
Yesterday's trend: 79.8
Today's weight: 80.6
Difference: 80.6 - 79.8 = 0.8
Rounded: 0.8 --> 1.0
Divide by ten: 1.0 / 10 = 0.1
Today's trend: 79.8 + 0.1 = 79.9
Whoops, I just gained something.
To make this calculation easier, take the following shortcut:
If the difference is between 0 and 0.5, the trend stays the same.
If the difference is less than -0.5, subtract 0.1 from the trend.
If the difference is less than -1, subtract 0.2 from the trend.
If the difference is more than 0.5, add 0.1 to the trend.
If the difference is more than 1, add 0.2 to the trend.
That's about it!
