Ed,
There's an old saying "don't hit that cause you don't know what she might got going on"....No, wait...wrong saying. The saying I'm looking for is "Figure out whatever works for you!"...yeah, that's it.
There's a lot of studies comparing High-Intensity-Interval-Training to Low-Intensity-Steady-State....there are benefits & advantages to each. Personally, I default to two notions:
1) Mix it up
2) Exercise is calories burned
Jogging is a huge calorie-burner, there's no getting around it. Walking may be on the mellow side, but jogging rips it up. The only issue I have with jogging is that I feel there are only 2 kinds of joggers: those who have trashed their knees and those who eventually will trash their knees. Run on grass, buy the best shoes with the latest technology adapted and reverse-engineered from the latest UFO crash...it's still high-impact and I know seemingly hundreds of bikers who were joggers.
In terms of time, HIIT is efficeint, effective & wonderful...but don't mistake it for the only way to burn your calories and get your exercise in. Millions of Americans have lost lots of weight entirely and merely reducing their calories. My observation is that pure caloric restriction does offer impressive weight-scale results quite quickly, but you're losing lean muscle, water and other stuff that's not pure nasty-blobby-white fat. Most my friends on Atkins (who did little or no exercise) look like they were left on an island for a couple months: no strength, endurance or power....just sucked-in chest and gaunt arms.
ANYWAYS...by incorporating exercise into the program you burn more calories and you place a toll on your bodies muscles...telling the body that you still need 'em and not to burn 'em up or shed them as a means of lowering your metabolism. And there also, excerise will stimulate your metabolism and keep that caloric furnace burning strong.
I've been repeatedly told that more then anything it's what you put in your mouth that really makes the difference. Exercise helps and it's great training and super-healthy...but for me it was really REALLY watching the calories and what I ate that helped me dial it in. Even my nutritionist, after having a meal, guessed he ate about 1,100 calories....we later broke it down and realized he had eaten nearly 1,700....there's more calories in food then most people realize.
Dude...there's no rocket science: move more, eat less and eat right and the results are inevitable. Problem is, you can't sell a book based on that...so they come up with magic formulas (The Zone), points (Weight Watchers) and all sorts of diets (blood-type diet). I'm sure some have more relevance then others...but as Wrangell prompts us to understand: calorie deficit is just that. Some bodies lose and develop faster then others, but in the long haul you will achieve AND ARE ACHIEVING what you set out to accomplish.
Who the man? YOU the man!
