congratulations on the 3lb loss spike! that's great. last time i lost well on atkins, i never went above the second pink. i kept my carbs low as well. don't obsess over the keto-stix. let the scales and your clothes tell the story.
i do ab work everyday, because i have sciatica and ab work keeps it under control. i only devolped sciatica when i gained weight from eating low fat! i do resistance training 3 times a week. it's not a very long routine. it only takes me 15 minutes, but i've been doing it faithfully for over a year. i also walk my dog, homer, most days. that's my aerobic exercise. he sets a pretty quick pace!