I have been faithful in biking my 8-miles 4-5 days a week, walking my 2.35 miles, and occasionally incorporating running where I have found a walk/run system that actually works for me.
My bodies response, nothing.
Frustration kicks in and a memory is triggered around the 4-week mark. History reminds me that it used to take 6-weeks of pretty intense workouts before my body responds as if it realizes I've been doing something.
Push through, push through, two more weeks pass.
Ahhhhhh... there it is... down 3 lbs in a week.
I can feel it in my clothes, too.
Frustration is being replaced with hope and motivation.