In other words, when your body has no glucose/sugar for fuel, it uses stored fat. When fat is used as fuel, it leaves what could be figuratively described as "ashes" which are ketones. They are excreted in urine, sweat etc.

If you want to see more evidence of ketosis in action, drink only one glass of water for a day. Water dilutes the concentration of ketones, so generally people who drink a lot of water may only have the stix show as trace.

You've done great without them so far...

Karen