Lisalaura, this answers your question about not registering in ketosis Exercise will use up a lot of the fatty acids you're burning for fuel - leaving little or none to spill over into your urin for these strips to test.

Also, having done LC before you make it harder and harder on yourself everytime you fall off the wagon and then get back on. Your body adapts and it learns not to trust you - eventually it is possible that not even LC will work for you. Take a look at this thread:

The uses and abuses of Induction

Nat