viejo,from what ive read,any exercise we do,our bodies become efficient at it thus its easier to do,,that is why i try and change my routine every day,,yesterday i walked up a continuous hill for at least 90 minutes and then walked back down the hill,today i did some wlkin and jogged a bit,etc etc,,whatever im doin its workin,.my 4x tshirts now swallow me and i only wear them at night with my pajamas,,3x feels about right,,i feel like i have lost a hell of a lot more weight than i actually have,,one thing for sure is my body composition as it is now cannot even be prepared to how it was when i started,,i believe as long as we are enjoying our daily exercise we wont get burned out give up,,ive began to really enjoy meeting people on the trails and talkin about walkin,runnin,nutrition etcetc,,the 22nd will be 2 months that ive been exercising,not very long at all.