There are times I know I’m “full of it.”

But the “it” I’ll admit to doesn’t mean my advice and insight are no better than what comes out my backside. The “it” in this case is hardcore health-and-fitness information.

For instance, I’m currently reading about how to best incorporate drop sets into a weightlifting routine. So far, drop sets strike me as a great way — possibly even the best way — for an intermediate weightlifter to gain muscle mass.

But are you a never-fail, five-times-a-week gym-goer who’d be willing to eat like a horse, sleep like a baby, and live like a monk to gain 10 pounds of pure muscle?

Probably not, so I probably shouldn’t devote 800 words on how to do those workouts. But there are probably oodles of you out there who have devoted some time to dieting and had success — until you needed to drop those final five pounds.

So that merits 800 words. Especially because dropping those final five pounds can be not only hard but also time consuming.

Even under the best of circumstances.

Morgan Spurlock, the man who became famous for gaining 24.6 pounds in a month by eating nothing but McDonald’s food for breakfast, lunch, supper and snacks, lost more than 81 percent of that in the first five months after ending the gluttony required for the “Super Size Me” documentary.

The final 18-plus percent (4.6 pounds), however, took nine more months even though Spurlock had an advantage few dieters have. On most nights, he dined on vegan meals specifically designed to safely promote weight loss prepared by someone who cared deeply about him, his girlfriend, who was a vegan chef and eventually, albeit temporarily, became his wife.

So what’s the secret to shedding those final five pounds? It’s not a secret really, just the topic of last week’s column, the key to optimal overall health and fitness — whether you’re trying to effectively finish a diet or not.

Details.

Some could save you 50 calories here and there or burn 50 more doing this instead of that. Standing throughout the workday instead of sitting, for example.

According to a study performed at the Mayo Clinic and published in March in the European Journal of Preventive Cardiology, standing as opposed to sitting expended nine more calories per hour in 46 subjects who were young, an average of 33 years old; rather slight, an average weight of 143.3 pounds; and mostly male, 60 percent.

While that may not seem like very many calories, that’s the point. Americans are notorious for sitting — more than seven hours a day according to the Mayo Clinic — and because of that, making the seemingly minor change of standing throughout the work day could be one of the details that makes your diet end in success.

For if you expend an additional 54 calories a day, which these slight-of-build subjects actually did by standing for seven hours a day, you create a theoretical weight loss of 5.5 pounds over a year.

And while standing for that amount of time during your work day may not be feasible, standing for any length of time helps your cardiovascular health as it expends additional energy. Furthermore, standing more is only one of the many minor changes you can make to burn off a few more calories.

For years, I attended after-school meetings and conferences with my school’s former principal, and I would note how one foot would fidget from the moment she was seated until the conclusion of the meeting.

While her jitteriness made me jumpy, it helped keep her thin. I imagine she’s well into her 40s now, yet her build is more like a lanky boy’s rather than a fully grown female’s.

If you’re not the fidgety type who twitches away 50 or so cals every day, you could become the mellow coworker who takes a walk a few times a day and speaks to colleagues directly instead of dashing off an in-house email. Preferably to those who work on different floors so you ascend and descend stairs.

What I’m suggesting you do Dr. James Levine and Dr. Michael Jensen have dubbed NEAT, the acronym for calorie expenditure created by Non-Exercise Activity Thermogenesis.

If you think about it, though, our current lifestyle strives to eliminate NEAT. Fast food restaurants, for instance, have a drive-thru option so you don’t even have to burn cals getting out of the car.

And once you bring that glorious junk home, you probably garage your car remotely, eliminating the caloric burn needed to walk a bit and lift and lower a door.

Think a bit, and I’m sure that you’ll decide there are a few other modern conveniences you could bypass to burn calories. Read next week’s column for ways food swaps could keep you from ingesting fewer calories than you do now.